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12 October, 21:14

Suppose j and k vary inversely, and k=3 when j=12. Find k when j=18.

2

4

24

36

+4
Answers (1)
  1. 12 October, 21:43
    0
    k = 2.

    Step-by-step explanation:

    j = c/k where c is a constant.

    When k = 3, j = 12 so

    12 = c/3

    c = 36.

    So the relation is j = 36/k

    When j = 18

    18 = 36 / k

    So 18k = 36

    k = 2.
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