Two cars leave town at the same time going in the same direction...

Question

two cars leave town at the same time going in the same direction. One travels at 40 mph and the other travels at 59 mph. In how many hours will they be 57 miles apart?

Answer 1

Let in x hours that they will be 57 miles apart.

59x-40x=57

19x=57

x=3

 

Answer 2

Location of car#1 = Velocity of car#1*time

Location of car#2 = Velocity of car#2*time

 

Distance between cars = Location of car#2 - Location of car#1

 

Distance between cars = (Velocity of car#1 minus Velocity of car#2)*time

 

Solve for time