Jill is twice as old as Jim. Jim is three years older than Ken .The sum of their ages is 61. What are their their ages? Let Ken's age be x Then Jim's age is x + 3 And Jill's age is 2*(x + 3) = 2*x + 6 Sum of ages =Simplifying or So Ken's age is , Jim's age is and Jill is Check: Sum = 13 + 16 + 32 = 61. Correct! Hope you got it :)