Sara's age = x James' age = (x+27). In 5 years ((x+27) + 5) = 4(x+5). Simplify and solve x + 32 = 4x + 20 32 - 20 = 4x - x 12 = 3x x = 12/3 = 4. ANSWER. Sara is 4 years old. James is 4 + 27 = 31 years old.