Problema Solution
For each kilogram of a persons weight, 20 milligrams of a drug is to be given. What dosage should be given to a person who weighs 200 pounds?
Answer provided by our tutors
let 'x' be the rate that should be given to a person who weight 200 pounds
1 pound = 0.453592 kg multiply both sides by 200
200 pounds = 200*0.453592 kg
200 pounds = 90.7184 kg
we have the following ratio
1 kg : 20 milligrams drug = 90.7184 kg : x milligrams drug
1 : 20 = 90.7184 : x
by solving it find
x = 1814.368 milligrams
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1814.368 milligrams drugs should be given to a person who weighs 200 pounds.