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16 April, 07:48

When p = 12, t = 2, and s = 1/6, r = 18. If r varies directly with p and inversely with the product of s and t, what is the constant of variation?

A: 1/8

B: 1/2

C: 4 1/2

D: 18

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Answers (1)
  1. 16 April, 08:00
    0
    R = kp/st

    18 = 12k / (1/6 x 2)

    18 = 12k / (1/3)

    18 = 36k

    k = 18/36 = 1/2
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