Question

According to the Food and Drug Administration, the recommended daily intake of iron is 16 mg. This is 4 less than twice the recommended intake of zinc. What is the recommended daily intake of zinc?

Answer 1

10mg is the recommended daily intake of zinc.

16 is 4 less than 20.

Since 16 is 4 less than twice the recommended intake, half it. Half of 20 is 10.

Answer 2

20 mg

Explanation:

x - 4 = 16

x = 20