Question #b351a

1 Answer
Sep 20, 2017

The car going 75mph

Explanation:

To work out the time an object takes to travel a distance going at a constant speed, the formula used is
t=d/v, where t is the time, d is the distance and v is the velocity, or speed. By looking at this, it can be realized that you can rearrange the formula to work out distance

d=tv, and speed
v=d/t.

Currently we have the distance and speed of both cars, but not the time. By plugging the numbers for Car 1 and Car 2 respectively into the formula, we get
t=100/60, t=120/75
t=5/3, t=8/5
t=1 2/3, t=1.6

Since the units were in miles per hour, we can see that Car 1 wil take 1 and 2/3 hours, or 1 hour and 40 minutes, while Car 2 will take 1.6 hours, or 1 hour and 36 minutes. Therefor, Car 2 will reach its destination first.

I hope I helped!