Sixty five percent of

Question

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

Options:

A . 150

B . 140

C . 130

D . 160

Answer: Option B

Let the number be x.
Then, 4*x/5âˆ’(65% of x) = 21
4x/5âˆ’65x/100 = 21
5 x = 2100
x = 140.

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