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22 May, 21:46

Given these equations x+y=9.0

0.50x+0.20y=4.05

What are the values of x and y

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Answers (1)
  1. 22 May, 22:40
    0
    X = 9.0 - y

    => 0.5 (9-Y) + 0.2Y=4.05

    => 4.5-0.5Y+0.2Y=4.05

    => 0.45=0.3Y

    => Y = 1.5, X=7.5
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