Problema Solution
The volume of blood, B, in a person’s body varies directly as body weight, W. A person who weighs 160 pounds has approximately 5 quarts of blood. Estimate the number of quarts of blood in a person who weighs 200 pounds.
Answer provided by our tutors
let 'x' represent the number of quarts of blood in 200 lbs person
160 : 5 = 200 : x
by solving we find
x = 5*200/160
x = 6.25 quarts
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a person who weights 200 pounds has 6.25 quarts of blood.