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10 March, 07:00

Solve the problem as directed. If x and y vary directly, and x = 10 when y = 3, what will be the value of x when y = 9?

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Answers (2)
  1. 10 March, 07:03
    0
    A simple ratio will probably work. 10=3

    x=9?

    Cross multiply. 3x = 90 This x=30
  2. 10 March, 07:19
    0
    X will equal 30. If y equals 9, then that means it was multiplied 3 times, so you do the same with x. 10*3=30.
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