distance rate time

Question

By Car, John traveled from city A to city B in 3 hours. At a rate that was 20 mph higher than John's, Peter traveled the same distance in 2 hours. Find the distance between the two cities

Answer 1

 

 distance = rate x time

 

 

    John's rate of speed is R.

 

   R*3 = (R+20)*2

 

  3R = 2R + 40

 

  R = 40

 

 John travels 40 mph for 3 hours , so 120 miles.

 Peter travels 60 mph for 2 hours, which is also 120 miles.