Question

Mr. Lane's travel time from Cleveland, Ohio to Toledo, Ohio, was 1 1/2 hours. The two cities are 99 miles apart. If his speed remained constant, what was Mr. Lane's rate of speed?

Answer 1

The equation for speed is

$v\text{ = }\frac{x}{t}$

where x is the distance, and t is the time. In the international system, we have that x must be in mt, and t must be in seconds. But in this case, we don't use the international system. So:

$v\text{ = }\frac{99\text{ miles}}{\frac{11\text{ hours}}{2\text{ }}}\text{ = }\frac{99\text{ miles x 2}}{11\text{ hours}}\text{ = 18 miles/hour}$

We can conclude that the correct answer is 18 miles/ hour.