Two numbers are in respectively 20% and 50% more than a third number. The ratio of the two numbers is?	Options
A) 2 : 5  B) 1 : 2  C) 4 : 5  D) 3 : 7  E) 5 : 6

Rationale: "let the 3 rd number be x then , first number = 120 % of x = 120 x / 100 = 6 x / 5 second number = 150 % of x = 150 x / 100 = 3 x / 2 ratio of first two numbers = 6 x / 5 : 3 x / 2 = 12 x : 15 x = 4 : 5 answer is c"
Answer: C