Add 8 to 52 to get 60. These 60 consists of two parts, of which one part is twice the other part. So, the parts are 20 years and 40 years. 20 years is the McCall's age, while Nikki's age is 2*20-8 = 32. ANSWER CHECK. 20 + 32 = 52 years, in total. ! Correct !