Right now, the ratio between the ages of Sandy and Molly is 4:3. After 6 years, Sandy’s age will be 34 years. What is Molly's age right now?	Choose the correct choice from the following answers
A) 12	B) 15	C) 18	D) 21	E) 24

Rationale: "now , sandy is 34 - 6 = 28 molly ' s age is ( 3 / 4 ) * 28 = 21 the answer is d ."
Answer: D