Sixty-five percent of

Question

Sixty-five percent of a number is 21 less four-fifth of that number , what is the number ?

Options:

A . 140

B . 141

C . 142

D . 143

Answer: Option A

Let the number be `x`

Then , `4/5 x `- (65% of `x` ) = 21 `hArr 4/5 x - 65/100 x = 21 hArr 15x = 2100 hArr x = 140.`

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