Question

Peed = distance divided by time taken. car 1 travels 10 miles every 5 minutes. car 2 travels 30 miles every 20 minutes. what is the difference of speed between these two cars in mph?

Answer 1

Car 1's speed is 5 minutes * 12 = 60 min = 1 hour

12 * 10 = 120 mph

So the speed is 120 mph.

Car 2's speed is 20 minutes * 3 = 60 minutes = 1 hour

3 * 30 miles = 60 miles mph

120 - 60 = 60 mph

The difference is the speed of the two cars is 60 mph