Question

The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 3 hours for a car moving at 65 mph . What is the speed of a car that makes the trip in 5 hours?

Answer 1

Answer: 35 miles per hour

Explanation:

At 65 miles per hour, the distance travelled within 3 hours is 65 times 3, which is 195 miles.

We can divide this value by 5 to find the constant speed that is required to get to the city in this duration of time.

195 / 5 = 39 miles per hour.