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MATHEMATICS

JAMB 2021 - Question 15

Mathematics 2021 JAMB Past Questions - Question 15: P varies directly as Q and inversely as R. When Q = 36 and R = 16, P = 27. Find the relation between P, Q and R.

P varies directly as Q and inversely as R. When Q = 36 and R = 16, P = 27. Find the relation between P, Q and R.

A: p=12/QR

B: P=Q/12R

C: P=12Q/R

D: P=12QR

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Correct Answer

Explanation

P ∝ Q/RP = K Q/RWhen Q = 36, R = 16, P = 27Then substitute into the equation27 = K 36/16K = 27×16/36K = 12So the equation connecting P, Q and R isP = 12Q/R