question here i don't get this

Question

The distance d that a car will travel at a rate, or speed, r in time t is given by the formula d=rt a car travels at 57 miles per hour for 4.5 hours how far will it travel solve the formula for t the car traveled at what miles per hour t=

Answer 1

If the car moves at 57 mph for 4.5 hours, it will travel a distance of 57 mph x 4.5 h = 256.5 mi.

Suppose you wanted to find the time t needed to travel some distance at a given rate. Rearrange the terms of d = rt by dividing both sides by r.

This makes t = d/r.

As an example, assume you want to find the time needed to travel 900 miles at 75 mph.

t = d/r = 900/75 = 12 hr.