Question

Mary sells lemonade, and she sells 10 cents from ever cup she sells to charity. The cups of lemonade are 45 cents. One day she made $17.10. How much money did she to charity that day.

Answer 1

$3.80

Explanation:

Given that:

One cup of lemonade is sold at 45 cents.

Total money made = $17.10

Number of cups of lemonade sold can be found by dividing the total money made with the sale price of one cup of lemonade.

Number of cups of lemonade sold =
`(\$18.10)/(45\ cents) = (\$18.10)/(\$0.45) =38`

For each cup sold, 10 cents are donated.

Total money donated = 38
`*` 10 = 380 cents = $3.80

Therefore, the answer is:

Total money donated by Mary is $3.80