Question

Rosemarie drove from Philadelphia, Pennsylvania, to Pittsburgh, Pennsylvania. The distance between Philadelphia and Pittsburgh is 305 miles. Rosemarie reached Pittsburgh 5 hours after she left Philadelphia. What is the speed at which she drove her car?

Answer 1

The speed was
`61(miles)/(hour)`

Explanation:

we know that

The speed is equal to divide the distance by the time

Let

s------> the speed in miles per hour

d ----> the distance in miles

t ----> is the time in hours

we know that

`s=(d)/(t)`

we have

`d=305\ miles`

`t=5\ hours`

substitute

`s=(305)/(5)`

`s=61(miles)/(hour)`