# How do you write each real-world example as a rate using labels and then the unit rate: Mrs. Thomas charges $60 for 120 minutes of tutoring?

##### 1 Answer

Feb 27, 2017

See the explanation

#### Explanation:

Let time be

Let cost be

Basing unity to be time

The units of measurement for time in the question is given as minutes.

Using ratio:

To make unit time we need to convert the 120 minutes into 1 minute

So we have:

For unit time to be 1 minute the charge is $0.50

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So to change this to that form we need 60 minute

But 60 minutes is the same as 1 hour giving: