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Sunday, October 19, 2014

Rate, Distance, and Time Problems, 8

Category: Physics, Mechanics

"Published in Newark, California, USA"

A runner A can run the mile race in 4.25 min. Another runner B requires 4.55 min to run this distance. If they start out together and maintain their normal speeds, how far apart will they be at the finish of the race?

Solution:

The given problem is about rate, distance, and time problem in which the two runners run in the same mile race. From the given problem also, runner A is faster than runner B because runner A has a lesser time to complete the mile race than runner B.

The speed of runner A is




The speed of runner B is




If the two runners will start together in a mile race, then runner A will finish the race. Therefore, their distance between the two runners at the end of the race is



For runner B, we use the time for runner A because runner A will finish the race.




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