85% of what number is 45?

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Answer 1 · 2016-09-08T15:39:47

$85%$ of $900/17$ is $45$

$85%$ is equivalent to $85/100$

Let $85%=85/100$ of $x$ be $45$

Hence $85/100xx x=45$ or

$85/100xx x xx100/85=45xx100/85$ or

$cancel85/cancel100xx x xxcancel100/cancel85=45xx100/85$ or

$x=45xx100/85$ or

$x=5xx9xx100/(5xx17)$ or

$x=cancel5xx9xx100/(cancel5xx17)$ or

$x=9xx100/17=900/17$