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20 October, 17:09

If x increased by the product of 11 and y is 103, and 9x increased by the product of 10 and y is 126, what are the values of x and y?

A. x = 8y=5

B. x = 9. y = 12

C. X = 4, y = 9

D. x = 9, y = 4

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Answers (1)
  1. 20 October, 17:45
    0
    C. x=4, y=9

    Step-by-step explanation:

    The given information show that

    x+11y=103 (1)

    9x+10y=126 (2)

    Isolate x from (1)

    x=103-11y

    Substitute x=103-11y into (2)

    9 (103-11y) + 10y=126

    927-99y+10y=126

    -89y=-801

    y=9

    So x=103-11x9=4
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