SOLUTION: if f varies jointly as q^2 and h, and f = 54 when q = 3 and h = 2, find f when q = 4 and h = 5

SOLUTION: if f varies jointly as q^2 and h, and f = 54 when q = 3 and h = 2, find f when q = 4 and h = 5

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Question 376391: if f varies jointly as q^2 and h, and f = 54 when q = 3 and h = 2, find f when q = 4 and h = 5

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
, where k is a constant of proportionality. Now from the given,
, or , or k = 3, so that the working equation is . When q = 4 and h = 5, .
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