If 35% of a number is 24 less than 50% of that number, then the number is ?  Answers:
A) 180	B) 450	C) 160	D) 170	E) 185

Rationale: explanation : let the number be n . then , 50 % of n - 35 % of n = 24 50 / 100 n - 35 / 100 n = 24 n = ( 24 x 100 ) / 15 = 160 . answer c
Answer: C