Question

lisa and valerie are picnicking in troughcreek state park in pennsylvania. lisa has bought a salad that she made with 3/4 cup of strawberries, 7/8 cup of peaches,and 1/6 cup of blueberries. they ate 11/12 cup of salad. about how many cups of fruit salad are left?

Answer 1

When I transfer all those fractions into a fraction with a denominator of 18, I get 30.5/18. From there, a little more math is needed however.

Answer 2

21/24 cup of fruit salad remain. 
First make all fractions have same denominator. Lowest common denominator would be 24. Add fractions and answer is 43/24, then subtract 22/24. (11/12 times 2 makes 22/24). Answer is 21/24