Sixty five percent of a number is 21 less than four fifth of that number. What is the number? Options: A . &nbsp120 B . &nbsp140 C . &nbsp150 D . &nbsp160 E . &nbspNone of these

Answer: Option B &nbsp- Let the number be a Then, 4 x a/5 –(65% of a) = 21 4a/5 –65a/100 = 21 15a = 2100 a = 140

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

Question

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

Answer: Option B
- Let the number be a
Then, 4 x a/5 –(65% of a) = 21
4a/5 –65a/100 = 21
15a = 2100
a = 140

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