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Scott, MIT Graduate

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I have three word problems that needs to be solved right away

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I have three word problems that needs to be solved right away can anyone help me please!!!!!!!!!!!!!!!

1.XXXXX XXXXX has been pricing speed-pass train fares for a group trip to New York. Three adults and four children must pay $90. Two adults and three children must pay $64.Find the price of the adult's ticket and the price of a child's ticket.

2.Matt and Anna Killian are frequent fliers on Fast-n-go airlines.They often fly between two cities that are a distance of 1575 miles apart. On on particular trip, they flew into the wind and the trip took 4.5 hours. The return trip with the wind behind them, only took about 3.5 hours.Find the speed of the wind and the speed of the plane in still air.

3.Jim began a 186-mile bicycle trip to build up stamina for a triathlete competition. Unfortunately, his bicycle broke, so he finished the trip walking. The whole trip took 5 hours.If Jim walks at a rate of 3 miles per hour and rides at 41 miles per hour, find the amount of time he spent on the bicycle.