Sandy is younger than Molly by 14 years. If the ratio of their ages is 7:9, how old is Sandy?
Choose the most appropriate option: A) 42 B) 49 C) 56 D) 63 E) 70

Rationale: "let sandy ' s age be 7 x and let molly ' s age be 9 x . 9 x - 7 x = 14 x = 7 sandy is 49 years old . the answer is b ."
Answer: B