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March 28, 2017

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40 is 42% of what number? (set this up with a variable,simplify)

  • math - ,

    0.42x = 40

    x = 40/0.42

    x = 95.238

  • math - ,

    42 % = 42 / 100

    40 = x * 42 / 100 Multiply both sides by 100

    40 * 100 = 42 x

    4000 = 42 x Divide both sides by 42

    4000 / 42 = x

    x = 95.238

    OR

    42 % = 42 / 100 = 0.42

    x = 40 / 0.42 = 95.238

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