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 poundsTo 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

Answer 1

Hello!

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 ?

Weighs ........ milligrams

92 -------------- 320

138 ------------- X

multiply the means by the extremes

92*x = 320*138

92x = 44160

x = 44160/92

x = 480

Answer:

480 milligrams

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Answer 2

138/92*320 = 480 milligrams