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2 February, 17:00

Suppose P varies directly with d, and p=7 when d=3.

What is the value of d when p=28?

A. 140/3

B. 12

C. 16

D. 4/3

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Answers (1)
  1. 2 February, 17:26
    0
    P vaires directly with d means

    p=kd

    7=k3

    divide by 3

    7/3=k

    28 = (7/3) d

    times 3/7 both sides

    84/7=d

    12=d

    B
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