Time and Distance problem

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Time and Distance problem

by rmahbu » Sat Dec 27, 2008 4:41 am
Please solve the problem
*A man travels a total of 4.2 miles each day to and from work. The traveling consume 72 minutes each day . How many hours would he save in 129 working days if he moved to another residence so that he would travel only 1.7 miles each day, assuming he travels at the same rate?

A. 98.3 B. 97 C.95.6 D. 93.2 E. 90.3
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Re: Time and Distance problem

by iqbal » Sat Dec 27, 2008 12:19 pm
rmahbu wrote:Please solve the problem
*A man travels a total of 4.2 miles each day to and from work. The traveling consume 72 minutes each day . How many hours would he save in 129 working days if he moved to another residence so that he would travel only 1.7 miles each day, assuming he travels at the same rate?

A. 98.3 B. 97 C.95.6 D. 93.2 E. 90.3
this man travels at 4.2/1.2= 3.5m/h. if he moves to a place where he is travelling only 1.7 miles then he will take only (1.7/3.5 = .5h) and save (1.2 - .5 = .7h) and for 129 working days 129 x .7 = 90.3 which means answer e is the right choice