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 Form 3 Revision Questions and Answers on Variation

Three quantities P,Q and R are such that P varies directly as the square of Q and inversely as the square root of R.Given that Q increases by 5% and R decreases by 36%,find the percentage change in P.If P=6,when Q=12 and R=25 find the value of P when Q=15 and R=81.

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