Question

Mike roller skates with a constant speed of 10 miles per hour. How long will he take to travel a distance of 15 miles.

Answer 1

So every hour he makes 10 miles. So he would take 1 and a half hours to go to Mcdonalds 15 miles away.

Step-by-step explanation:

Answer 2

`\huge\boxed{{\textsf{90 minutes}}}`

We know that Mike's speed is
`\frac{10\ \text{miles}}{60\ \text{minutes}}` since there are
`60` minutes in an hour, and we know that MIke needs to travel
`15` miles. We'll model this using fractions:

`\frac{10\ \text{miles}}{60\ \text{minutes}}=\frac{15\ \text{miles}}{x\ \text{minutes}}`

We can see that there is a
`2:3` ratio here, so we'll divide the left fraction by
`2` and multiply it by
`3` to get the right fraction.

`(10)/(60)\Rightarrow(5)/(30)\Rightarrow\frac{15\ \text{miles}}{\boxed{90\ \text{minutes}}}`