Question

A boy rides his bike at a speed of 28 miles per hour. How

many hours will it take him to complete a trip of 120 miles?
Round your answer to the nearest whole number.
hours

Answer 1

About 4 hours.

Explanation:

Let's set up a proportion and cross multiply.

`(28 miles)/(1 hour) = (120 miles)/(x)`

Cross multiply.

120 = 28x

Divide by 28 on both sides.

= 4.28571428571

Round this to the nearest whole number, which is just 4. The answer is about 4 hours.