a certain medicine is given in an amount proportional to a patients body weight.suppose a patient weighed 100 pounds requires 125 milligrams of medicine,what is the weight of a patient who requires 300 milligrams of medicine?

Question

kira_yamato · Answer

Let weight = W pounds, amount of medicine = m mg
W is directly proportional to m
W = km, where k is constant of proportionality, k > 0
When W = 100, m = 125
100 = k(125)
k = 0.8
W = 0.8m
When m = 300,
W = 0.8(300) = 240
Weight = 240 pounds

anonymous · Answer

240 pounds

anonymous · Answer

KIRA!!!

anonymous · Answer

here is a simpler way...300/125 = 2.4 x 100 = 240 (:
Hope for a medal :3