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20 February, 06:10

If x varies directly as y and x = 18 when y = 3 find x when y=7

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  1. 20 February, 10:09
    0
    42

    Step-by-step explanation:

    x = Ky

    18 = K (3)

    K = 18/3 = 6

    x = 6y

    x = 6 (7) = 42
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