Question 777140
How many hours will it take a car traveling at 60 mph to catch up to a car traveling at 40 mph if the slower car starts one hour before the faster car? And please show the work so i can understand it
Car I speed = 40 mph

Car II speed = 60 mph

Before Car II starts Car I has traveled 40 miles in 1 hour.

Since they are traveling in same direction effective speed = 60-40 mph
=20 mph

Catch up speed = 20 mph
catch up distance = 40 miles

time to catch up = 40/20 = 2 hours