Question

A crime suspect fled the scene when police officers entered the building. How far could he run in 10 minutes if he can run 5 miles per hour?

Answer 1

The answer is `5/6` miles.

For unit conversions, we want to use the multiply by 1 method:

`5(mi)/h*10MIN*(1h)/(60MIN)=50/60mi=5/6mi`

The 2 left factors are given so we need to determine the `3^(rd)` factor.

We want miles in our answer, we don't want `h` or `MIN`. We need a conversion ratio between `h` and `MIN`, so `60 MIN=1h`.

We have `MIN` in the numerator and `h` in the denominator. So our conversion ration must have `h` in the numerator and `MIN` in the denominator so that they will cancel out.