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.
or