Let x be the Ella's age, in years. Then Kylan age is 4x years. Quentin age is, from one side, 4x-1 years, and from the other side, x+5 years. It gives this equation 4x - 1 = x + 5. Solve it, step by step 4x - x = 5 + 1 3x = 6 x = 6/3 = 2. ANSWER. Ella is 2 years old; Kylan is 4*2 = 8 years old; Quentin is 8-1 = 7 years old.