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Sixty-five percent of a number is 21 less than; four-fifth of that number.What is the number?

Sixty-five percent of a number is 21 less than; four-fifth of that number.What is the number? Correct Answer 140

Let, the number is x 65% of x is = 65x/100 = 13x/20 According to question, 13x/20 = 4x /5 - 21 4x/5 - 13x/20 = 21 (16x - 13x)/20 = 21 3x = 320 x = 140

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