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27 June, 21:21

The variable y is directly proportional to the variable x. If y = 12 when x = 14, what is the value of x when y = 247

A)

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  1. 27 June, 23:00
    0
    Answer: 288.17

    Step-by-step explanation:

    y ∝ x

    ⇒ y = kx

    substituting the given value of x and y, the equation becomes

    12 = 14 k

    therefore

    k = 12/14

    k = 6/7

    The formula then becomes

    y = 6/7 x

    when y = 247, we have

    247 = 6/7 x

    6x = 247 x 7

    6x = 1729

    x = 1729/6

    x = 288. 17
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