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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. a)Given...

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.
a)Given that P = 20 when Q = 5 and R = 9. Find P when Q = 7 and R = 25
b)If Q increased by 20% and R decreased by 36%, find the percentage change in P

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Kavungya answered the question on October 30, 2019 at 07:58

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