Question

Cole earned a total of $15.40 by selling 7 cups of lemonade. How many cups of lemonade does Cole need to sell in all to earn $30.80? Solve by using rates.

Answer 1

To solve the problem, our first instinct may to go straight into getting the amount of money you need for each cup. But if we look closer, we notice 15.40 is just 30.80 divided by two. So, the amount of cups he need to sell is just

30.80/15.40 * 7 =

2*7=

14 cups

-Hunter