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18-08-2016
Mathematics

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What is the value of x in the equation 1/5x-2/3y =30 when y = 15?

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18-08-2016

1/5x - 2/3y=30
y=15
⇒1/5x-2×15/3=30
1/5x-10    =30
    1/5x    =40
∴      x    =200

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