Question

How long would it take to travel 90 miles at 30 miles per hour

Answer 1

Three hours

Explanation:

If you go 30 miles per hour then after three hours you would get to 90 miles.

Answer 2

`\boxed {\tt 3 \ hours}`

Explanation:

Time can be calculated by dividing the distance by the speed.

`t=(d)/(s)`

where d is the distance and s is the speed.

The distance is 90 miles and the speed is 30 miles per hour.

`d= 90 \ mi \\s= 30 \ mi/hr`

`t=(90 \ mi)/(30 \ mi/hr)`

Divide. Note that the miles, or mi will cancel each other out.

`t=(90)/(30 \ hr)`

`t= 3 \ hr`

It will take 3 hours to travel 90 miles at 30 miles per hour.