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11 April, 17:02

Y varies directly with x, and y = 2 when x = 5.

What is the value of x when y = 15?

A. x = 25

B. x = 10

C. x = 6

D. x = 37.5

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Answers (2)
  1. 11 April, 17:06
    0
    2/5 = 15/x

    cross multiply

    x = 6
  2. 11 April, 17:08
    0
    We can see that y has to be multiplied by 2.5 in order to get x.

    So ...

    15 * 2.5 = 37.5

    The answer would be D!
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