The present age ratio of Anshul

Solution

ATQ, Let present age of Anshul and Pawan be ‘5x’ years and ‘7x’ years respectively. And, present age of Chinky and Diksha be ‘3y’ years and ‘2y’ years respectively. According to question, (5x – 10)/(3y – 10) = 3/4 20x – 40 = 9y – 30 20x – 9y = 10………………………. (1) (7x + 10)/(2y + 10) = 3/2 14x + 20 = 6y + 30 14x – 6y = 10 7x – 3y = 5……………………….. (2) Solving equation (1) and (2), we get x = 5 and y = 10 So, Desired Average = (5 × 5 + 7 × 5 + 3 × 10)/3 = 30 year