Let the present ages of Nitish, Manish and Rohit be 5x, 6x and 11x, respectively. According to the question, (5x + 7) + (6x + 7) + (11x + 7) = 87 22x + 21 = 87 22x = 66 x = 3 Nitish’s present age = 5 × 3 = 15 years Manish’s present age = 6 × 3 = 18 years Rohit’s present age = 11 × 3 = 33 years