10 year ago x = 24, n = 4
∴ x = 24 × 4 = 96 year
If 10 years ago, total age of 4 member = 96 year
total age of member now = (96 + 10 × 4) year = 136 year
Total age of 6 member = 74 × 6 = 144 year
i.e., Sum of age of 2 **** = 144 – 136 = 8 year
so x + x + 2 = 8 = x = 3 year
∴ The ages of **** 3 and 4 year.
