Right now, the ratio between the ages of Sandy and Molly is 4:3. After 6 years, Sandy’s age will be 42 years. What is Molly's age right now?  Pick one:
A) 24	B) 27	C) 30	D) 33	E) 36

Rationale: "now , sandy is 42 - 6 = 36 molly ' s age is ( 3 / 4 ) * 36 = 27 the answer is b ."
Answer: B