Question

To control an infection, a doctor recommends that a patient who weighs 92 pounds be given 320 milligrams of antibiotic. If the antibiotic is given proportionally according to the patient's weight, how much antibiotic should be given to a patient who weighs 138 pounds?

A 400 milligrams
B 480 milligrams
C 550 milligrams
D 600 milligrams

Answer 1

480 milligrams

Explanation:

92 pounds → 320 milligrams

138 pounds → 320/92 x 138 = 480 milligrams