A number decreased by 27.5 % gives 87 then the number is?

A number decreased by 27.5 % gives 87 then the number is?
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1 Answer

Let the unknown number be X.

87 is 72.5% (=100-27.5) of X.

So, 1% of X is 87/72.5

Therefore, X=(87/72.5)x100=120.

CK: 120x(27.5/100)=33, 120-33=87  CKD.

The number is 120.

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