20% of what number is 39

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10-02-2015
Mathematics

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20% of what number is 39

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Анонимidn Анонимidn · Answer 1 · 2015-02-11T16:13:29-05:00

Анонимidn Анонимidn

11-02-2015

[tex]\begin{array}{ccc}100\%&-&x\\\\20\%&-&39\end{array}\ \ \ |cross\ multiply\\\\\\20x=100\cdot39\\\\20x=3900\ \ \ \ |divide\ both\ sides\ by\ 20\\\\\boxed{x=195}[/tex]

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