Pepperidge Farm Goldfish is a snack food for which 40% of its calories come from fat. Rold Gold® Pret zels receive 9% of their calories from fat. How many grams of each would be needed to make 620 g of a snack mix for which 15% of the calories are from fat?

Solution:

Pepperidge Farm Goldfish: x

Rold Gold® Pret zels : y

SO the equation is

x + y = 620

40%*x + 9%*y = 620*15%

So

x = 120

y = 500

So

Pepperidge Farm Goldfish: 120 g

Rold Gold® Pret zels : 500 g