Question

John can jog 2 miles in the time that it takes George to jog 4 miles. If George averages 4 mph faster than John, find John's speed.​

Answer 1

Explanation:

d=vt, t=d/v, we are told they run for same amount of time so t=t and d2/v2=d1/v1

2/v=4/(v+4)

2v+8=4v

-2v+8=0

-2v=-8

v=4

So John jogs at 4 mi/hr