51 is 340% of what?

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Answer 1 · 2017-04-03T07:07:50

15

I hope you know that if some number $a$ is some $c%$ of a number $b$ then $color(red)(a/b*100 = c)$

Let $51$ be $340%$ of some number say $color(red)(x)$ .

Then,

$51/x*100 = 340$

$=> 51/340*100 = x$

$=> x = 15$

Hence $51$ is $340%$ of $15$ .