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David
David, Post-Doctoral Degree
Category: Math Homework
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Experience:  Theoretical Physics
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boat travels 68miles at a certain speed. the boat travels 16

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boat travels 68miles at a certain speed. the boat travels 16 miles on the second part of the trip 5 mph slower. total time of trip is 3hrs. what was the speed on each part of the trip? interger or decimal and round to the nearest hundredth.

David :

the equation you need to solve is as follows:

David :

3= 68/v+ 16/(v-15)

David :

the answer is

David :

sorry the corrected equation is as this

David :

3= 68/v+ 16/(v-5)

David :

so the answer would be:

David :

(99+sqrt(5721))/6 on the first part

David :

and (69+sqrt(5721))/6 on the second part

David :

hope this helps

Customer:

so it would be written out as 99+ sqrt5721 over 6 on the first part?

David :

I think I need to round the answer

Customer:

yeah im thinking that too

David :

OK

David :

give me a sec

David :

29.11 and 24.11

Customer:

is that rounded to the nearest hundredth?

David :

yes, exactly

David :

nearest hundredth

David :

means 2 decimal places.

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