The girl scouts earned $30 total from selling delicious cookies. They want to go to the pool. It will cost them $2.50 per person to go and 10 people are going. What is the amount left?
Let's be accurate as possible and think first.
5
The girls paid $2.

50 / person * 10 people = $25.

The girls have $30 - $25 = $5 left.

.

So, the answer is 5