Word problem for algebra

Algebra
Tutor: None Selected Time limit: 1 Day

A bicycle path is 5 miles long. A man walks from one end at the rate of 3 mph. At the same time, a friend bicycles from the other end, traveling at 12 mph. In how many minutes will they meet? 

(what method do I have to use to figure this out?)

May 16th, 2015

hello there welcome to study pool!


this is relative velocity problem

the easiest method to solve is

stop one member and allowed to another member to travel

how to do it?

add 3mph to opposite direction of man walk.

then velocity of man=0

when add 3mph for bicycle 12+3=15mph


now we can apply 

s=ut

5mil=15*t

t=5/15

t=1/3

t=0.33s


May 16th, 2015

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May 16th, 2015
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May 16th, 2015
Dec 9th, 2016
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