Smith is younger than Watson by 22 years. If the ratio of their ages is 5:7, find the age of Smith? (A) 55 (B) 66 (C) 77 (D) 88â–ºCorrect Option Correct Option is: AIf Watson age is x, then Smith age is x-22, so (x-22)/x = 5/7 => 7x-154 = 5x => 2x = 154 => x = 77 So Smith age is 77 – 22 = 55