Question

Janie and David made two different kinds of cookies. The first recipe 1// cup sugar, while the second recipe uses 3/4 cup of sugar. They wanted to make 3 batches of each kind of cookie. The sugar canister was half full when they started using it. Now it has 2 1/4 cups left in it. How many cups does the canister hold when it is full?

Answer 1

8 cups

Explanation:

So say the canister hold x when it's full. Half is 0.5x

he used 1 + 0.75 = 1.75

Subtract that from 0.5x and get an equation:

0.5x - 1.75 = 2.25

0.5x = 4

x = 8