If 90 oz of this dish are needed, how many ounces of each ingredient should be used?

Question

In preparing a certain recipe, a chef uses 6 oz of ingredient A, 2 oz of ingredient B, and 7 oz of ingredient C. If 90 oz of this dish are needed, how many ounces of each ingredient should be used?

ingredient A oz

ingredient B oz

ingredient C oz

Answer 1

6x + 2x + 7x = 60

15x = 60

x = 4

24, 8, and 28