How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask R.R. Jha Your Own Question

R.R. Jha
R.R. Jha, Tutor
Category: Homework
Satisfied Customers: 5420
Experience:  B.Tech
Type Your Homework Question Here...
R.R. Jha is online now
A new question is answered every 9 seconds

1)Andre Candess manages an office supply store. One product

Customer Question

1)Andre Candess manages an office supply store. One product in the store is computer paper. Andre


knows that 10,000 boxes will be sold this year at a constant rate throughout the year. There are 250


working days per year and the lead-time is 3 days. The cost of placing an order is $30, while the


holding cost is $15 per box per year. How many units should Andre order each time?


            A)500


            B)100


            C)400


            D)200


            E)none of the above


 


2)R.C. Barker makes purchasing decisions for his company. One product that he buys costs $50 per


unit when the order quantity is less than 500. When the quantity ordered is 500 or more, the price


per unit drops to $48. The ordering cost is $30 per order and the annual demand is 7,500 units. The


holding cost is 10 percent of the purchase cost. If R.C. wishes to minimize his total annual


inventory costs, he must evaluate the total cost for two possible order quantities. What are these


two possible quantities? (Round answer to nearest unit.)


            A)306 and 50


            B)300 and 500


            C)300 and 306


D)200 and 306


E)none of the above


 


3)The demand during the lead time is normally distributed with a mean of 40 and a standard


deviation of 4. If they have calculated a reorder point of 46.60 units, what service level are they


assuming?


            A)97.5 percent


            B)85 percent


            C)90 percent


            D)95 percent


            E)none of the above


 


4)Which of the following does not have an impact on EOQ?


            A)order cost


            B)demand per unit time


            C)safety stock


D)all of the above


E)none of the above 


 


5) The annual demand for a product has been projected at 2,000 units. This demand is assumed to be


constant throughout the year. The ordering cost is $20 per order, and the holding cost is 20 percent


of the purchase cost. Currently, the purchase cost is $40 per unit. There are 250 working days per


year. Whenever an order is placed, it is known that the entire order will arrive on a truck in 6 days.


Currently, the company is ordering 500 units each time an order is placed. What is the total


holding cost for the year using this policy?


A)$4,000


            B)$8,000


            C)$2,000


            D)$400


            E)none of the above


 


6)Rolf Steps is the production manager for a local manufacturing firm. This company produces


staplers and other items. The holding cost is $2 per unit per year. The cost of setting up the


production line for this is $25. There are 200 working days per year. The production rate for this


product is 80 per day. If the production order quantity is 200 units, what was the daily demand


(rounded to the nearest whole unit)?


            A)6 units


            B)9 units


            C)8 units


            D)7 units


            E)none of the above


7)Mark Achin sells 3,600 electric motors each year. The cost of these is $200 each, and demand is


constant throughout the year. The cost of placing an order is $40, while the holding cost is $20 per


unit per year. There are 360 working days per year and the lead-time is 5 days. If Mark orders 200


units each time he places an order, what would his average inventory be (in units)? 


            A)100


            B)120


            C)200


            D)60


            E)none of the above


 


8)Judith Thompson, the manager of the student center cafeteria, has added pizza to the menu. The


pizza is ordered frozen from a local pizza establishment and baked at the cafeteria. Judith


anticipates a weekly demand of 10 pizzas. The cafeteria is open 45 weeks a year, 5 days a week.


The ordering cost if $15 and the holding cost is $0.40 per pizza per year. The pizza vendor has a


4-day lead-time and Judith wants to maintain 1 pizza for safety stock. What is the optimal reorder


point?


            A)9


            B)10


            C)4


            D)8


E)none of the above


 


TRUE/FALSE.  Write 'T' if the statement is true and 'F' if the statement is false.


9)We can usually determine an appropriate safety stock even if we are unable to accurately assess the


actual cost of a stockout.


 


10)Economic order quantity (EOQ) analysis has recently become practical as a consequence of


high-speed computers.


 


11) Consider the following linear programming problem:


Maximize 5X + 6Y


Subject to: 4X + 2Y 􀁋 420


1X + 2Y 􀁋 120


all variables 􀁌 0


Which of the following points (X,Y) is in the feasible region?


A) (105,5)


B) (100,10)


C) (30,60)


D) (0,210)


E) none of the above


12) The condition when there is no solution that satisfies all the constraints is called


A) dependency.


B) redundancy.


C) boundedness.


D) optimality.


E) none of the above


13) If the addition of a constraint to a linear programming problem does not change the solution, the


constraint is said to be


A) unbounded.


B) bounded.


C) redundant.


D) non-negative.


E) infeasible.


14) Consider the following linear programming problem:


Maximize 10X + 30Y


Subject to X + 2Y 􀁋 80


8X + 16Y 􀁋 640


4X + 2Y 􀁌 100


X, Y 􀁌 0


This is a special case of a linear programming problem in which


A) there is a redundant constraint.


B) there are multiple optimal solutions.


C) there is no feasible solution.


D) this cannot be solved graphically.


E) none of the above


15) Which of the following is not acceptable as a constraint in a linear programming problem


(maximization)?


Constraint 1 X + XY + Y 􀁌 12


Constraint 2 X - 2Y 􀁋 20


Constraint 3 X + 3Y = 48


Constraint 4 X + Y + Z 􀁋 150


A) Constraint 1


B) Constraint 2


C) Constraint 3


D) Constraint 4


E) none of the above


16) Consider the following linear programming problem:


Maximize 12X + 10Y


Subject to: 2X + 3Y 􀁋 480


4X + 3Y 􀁋 360


all variables 􀁌 0


The maximum possible value for the objective function is


A) 1560.


B) 360.


C) 480.


D) 1520.


E) none of the above


17) Sensitivity analyses are used to examine the effects of changes in


A) technological coefficients.


B) contribution rates for each variable.


C) available resources.


D) all of the above


E) none of the above


18) Infeasibility in a linear programming problem occurs when


A) there is an infinite solution.


B) more than one solution is optimal.


C) the feasible region is unbounded.


D) a constraint is redundant.


E) there is no solution that satisfies all the constraints given.


19) Which of the following is not acceptable as a constraint in a linear programming problem


(minimization)?


Constraint 1 X + Y 􀁌 12


Constraint 2 X - 2Y 􀁋 20


Constraint 3 X + 3Y = 48


Constraint 4 X + Y + Z 􀁋 150


Constraint 5 2X - 3Y + Z > 75


A) Constraint 1


B) Constraint 2


C) Constraint 3


D) Constraint 4


E) Constraint 5


20) When appropriate, the optimal solution to a maximization linear programming problem can be


found by graphing the feasible region and


A) moving the isoprofit lines towards the origin in a parallel fashion until the last point in the


feasible region is encountered.


B) locating the point that is highest on the graph.


C) finding the profit at every corner point of the feasible region to see which one gives the


highest value.


D) none of the above


E) all of the above


21) Which of the following is not one of the steps in formulating a linear program?


A) Graph the constraints to determine the feasible region.


B) Use the decision variables to write mathematical expressions for the objective function and


the constraints.


C) Define the decision variables.


D) Identify the objective and the constraints.


E) Completely understand the managerial problem being faced.


22) Which of the following functions is not linear?


A) 2X - 5Y + 2Z


B) 2X + 5YZ


C) 3X + 4Y + Z - 3


D) Z


E) 5X + 3Z


23) Two models of a product - Regular (X) and Deluxe (Y) - are produced by a company. A linear


programming model is used to determine the production schedule. The formulation is as follows:


Maximize profit = 50X + 60Y


Subject to: 8X + 10Y 􀁋 800 (labor hours)


X + Y 􀁋 120 (total units demanded)


4X +10Y 􀁋 500 (raw materials)


X, Y 􀁌 0


The optimal solution is X=100, Y=0.


Which of these constraints is redundant?


A) the second constraint


B) the first constraint


C) the third constraint


D) all of the above


E) none of the above


24) Typical resources of an organization include ________.


A) warehouse space utilization


B) labor volume


C) machinery usage


D) raw material usage


E) all of the above


25) In a minimization problem, when one or more of the solution variables and the cost can be made


infinitely large without violating any constraints, then the linear program has


A) alternate optimal solutions.


B) an infeasible solution.


C) a redundant constraint.


D) an unbounded solution.


E) none of the above


TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.


26) The addition of a redundant constraint lowers the isoprofit line.


27) Resource restrictions are called constraints.


28) Resource mix problems use LP to decide how much of each product to make, given a series of


resource restrictions.


29) Management resources that need control include machinery usage, labor volume, money spent,


time used, warehouse space used, and material usage.


30) When two or more constraints conflict with one another, we have a condition called


unboundedness.

Submitted: 2 years ago.
Category: Homework
Expert:  R.R. Jha replied 2 years ago.
Hi,

Correct option is D


Regards
Expert:  R.R. Jha replied 2 years ago.
Oh, there are 30 questions in total. I think only first of them got posted when requested me.
Customer: replied 2 years ago.
I apologize. I had to go in and edit my questions. There are 30 questions in total.
Expert:  R.R. Jha replied 2 years ago.
Ok, no problem. I'll review the questions and let you know.
Expert:  R.R. Jha replied 2 years ago.
And could you please attach the original document for the questions? Inequality signs are missing from all constraint problems.
Customer: replied 2 years ago.

It will not let me attach.

For 11 it has

5x +6y

4x + 2y (< over -) 420

1x + 2y (< over -)120

all variables (> over -)

 

For 14 it has

10x + 30y

x +2y (< over -) 80

8x + 16y (< over -) 640

4x + 2y (> over -) 100

x, y (> over -) 0

 

 

Customer: replied 2 years ago.

For 15

Constraint 1: x+xy + y (> over -) 12

Constraint 2: x-2y )> over -) 20

Constraint 3: x+3y =48

Constraint 4: x+y+z (< over -) 150

 

for 16

maximize subject to:

12x+10y

2x +3y (< over -) 480

4x +3y (< over -) 360

all variables (> over -) 0

 

for 19

constraint:1 x+y (> over -) 12

constraint 2: x-2y (> over -)20

constraint 3: x+3y=48

constraint 4: x+y+z (< over -) 150

constraint 5: 2x-3y +z > 75

 

for 23

maximize profit = 50x+60y

subject to: 8x+10y (< over -) 800 (labor hours)

x+y (< over -) 120 (total units demanded)

4x + 10y (< over -) 500 (raw materials)

x, y (> over -)0

 

the optimal solution is x=100, y=0

 

Expert:  R.R. Jha replied 2 years ago.
Could you please mention the deadline for this question?
Customer: replied 2 years ago.
Midnight Wed, Dec 7.
Expert:  R.R. Jha replied 2 years ago.
Ok.
Customer: replied 2 years ago.
Could you please tell me what your current status is with these questions?
Expert:  R.R. Jha replied 2 years ago.
I can help with most of the questions, but these are quite many given most of them require mathematical calculations. At your current offer I can answer 6-7 questions at a time. That would be 4-5 sets for total of 30 questions. Please let me know if it's acceptable to you as multiple sets.


Regards
Customer: replied 2 years ago.
I am not satisfied with that. I have seen your work and you have answered more then 20 for the same amount of money. I would be satisfied with the first 20 questions from this list.
Expert:  R.R. Jha replied 2 years ago.
I'm not sure. I might have done it some time before, or because I'd have worked with him on many questions before.

Anyways, I'd opt out and open this to other experts who might be willing to help with these all questions at your current offer.


Regards
Customer: replied 2 years ago.
If this was the case you should have told me earlier on. My DEADLINE is tonight.
Customer: replied 2 years ago.

Not only that but a good tip would have been included for your efforts.

Expert:  R.R. Jha replied 2 years ago.
Ok. Could you specify the amount you're willing to add as bonus before I start working on it?
Customer: replied 2 years ago.

I was planning on doing a $10.00 tip. That is over 20%

Expert:  R.R. Jha replied 2 years ago.
Alright, I hope you'd be able to afford more. What time are the answers due?
And as I said before, I'm not sure about a few. I hope that's ok with you.
Customer: replied 2 years ago.
The ones you can't answer please leave blank so I know which ones thy are. They are due by midnight.
Expert:  R.R. Jha replied 2 years ago.
Ok
Expert:  R.R. Jha replied 2 years ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
If you've already paid for this answer, simply Login.
R.R. Jha, Tutor
Category: Homework
Satisfied Customers: 5420
Experience: B.Tech
R.R. Jha and 8 other Homework Specialists are ready to help you
Customer: replied 2 years ago.
I will check them out as soon as I get home from work. Thank you very much and I will definatly aend you a bonus :)
Expert:  R.R. Jha replied 2 years ago.
Ok, I'll look forward to it, as it was quite a time consuming task.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
< Last | Next >
  • http://ww2.justanswer.com/uploads/BU/BusinessTutor/2012-2-2_115741_Kouki2.64x64.jpg Manal Elkhoshkhany's Avatar

    Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
  • http://ww2.justanswer.com/uploads/LI/lindaus/2012-6-10_04811_IMG20120609164157.64x64.jpg Linda_us's Avatar

    Linda_us

    Finance, Accounts & Homework Tutor

    Satisfied Customers:

    3121
    Post Graduate Diploma in Management (MBA)
  • http://ww2.justanswer.com/uploads/ComputersGuru/2010-02-13_051118_Photo41.JPG LogicPro's Avatar

    LogicPro

    Engineer

    Satisfied Customers:

    3035
    Expert in Java C++ C C# VB Javascript Design SQL HTML
  • http://ww2.justanswer.com/uploads/lanis/2009-4-1_233717_phput9xef_c1pm.jpg Lani S.'s Avatar

    Lani S.

    Tutor

    Satisfied Customers:

    2457
    Registered Nurse, Internet Researcher, Private Tutor
  • http://ww2.justanswer.com/uploads/chooser77/2009-08-18_162025_Chris.jpg Chris M.'s Avatar

    Chris M.

    M.S.W. Social Work

    Satisfied Customers:

    2341
    Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
  • http://ww2.justanswer.com/uploads/JawaadAhmed/2009-6-27_12137_SIs_SHadi.jpg F. Naz's Avatar

    F. Naz

    Chartered Accountant

    Satisfied Customers:

    1975
    Experience with chartered accountancy
  • http://ww2.justanswer.com/uploads/JK/jkcpa/2011-1-16_182614_jkcpa.64x64.jpg Bizhelp's Avatar

    Bizhelp

    CPA

    Satisfied Customers:

    1873
    Bachelors Degree and CPA with Accounting work experience