# George is making 8 gallons of Tropical punch. He has already poured in 1 3/4 gallons of pineapple juice and 2 1/2 gallons of orange juice. The only other ingredient is 7-Up. How much 7-Up does George need in gallons?

##### 1 Answer

George will have to add

#### Explanation:

Add the gallons of juice that he has already used. Subtract that from

Convert both mixed fractions to improper fractions. Multiply the denominator by the whole number, add the numerator, and place the result over the denominator.

Simplify.

When adding or subtracting fractions, they must have the same denominator. Multiply

Simplify.

George has already poured in

To determine how much 7-Up he needs to add, subtract

Any whole number is understood to have a denominator of

Rewrite the expression.

Multiply

Simplify.

Convert

George will have to add