We want to find how much money Dalila will earn if she works 18 hours the next week. To do so, we will find the unit rate, which is the amount of money she earns per hour, and multiply it by 18 hours. We know that Dalila earns $ 108.75 for working 15 hours. Let's write a rate to show this situation.
$ 108.75/15hours
A unit rate is a rate that has been reduced to a denominator of 1 unit. In this case, the unit rate is the amount of money Dalila earns per hour. Let's find the unit rate! For simplicity, we will ignore the units.
We found the unit rate!
$ 108.75/15hours =$ 7.25/1hour
As we can see, Dalila earns $ 7.25 per hour. Now we can multiply the unit rate by 18 hours.
$ 7.25/1 h * 18 h = $7.25 * 18 = $ 130.50
We found that Dalila will earn $130.50 if she works 18 hours the next week.
