Question

Katrina drove 165 miles in 3 hours. At this rate, how far can she drive in 7 hours?

Answer 1

Katrina can drive 1,155 miles in 7 hours.

Answer 2

385 miles

Explanation:

Let's start by finding the unit rate (how far she can drive in 1 hour):

`(165mi)/(3hr)`

Divide both the numerator and the denominator by 3 hours (Please note that this is essentially dividing the fraction by 1, so we are only simplifying the fraction, not changing it):

`55mi/hr`

Now, using a unit converter, we can find out far she can drive in 7 hours:

`7hr((55mi)/(1hr))=7*55mi=385mi`

She can drive 385 miles in 7 hours