65% of a number is 21 less than 4/5th of that number. What is the number?
Select the correct option:
A) 100  B) 120  C) 140  D) 130  E) 115

Rationale: let the number be x then , 4 x / 5 - ( 65 % of x ) = 21 4 x / 5 - 65 x / 100 = 21 x = 140 answer is c
Answer: C