Question

Tiffany pays $40 for 160 minutes of talk time on her cell phone. How many minutes of talk time does she get per dollar?

Answer 1

`4` minutes per dollar

Explanation:

This is a "rate" problem.

So you have to find the rate as `x` minutes per 1 dollar.

What you do is you divide minutes by dollars:

`160 mins div $40`

so that you can get `x` minutes per dollar.

`160/40 = 4`

So the answer is `4` minutes per dollar.

Or:

You can also show where the `$1` comes from:

`160` minutes for `$40" "larr div` both by `40`

`160/40` minutes for `($40)/40`

`" "4` minutes for `$1`