SSC CHSL 4 Mar 2018 Shift 1 Paper

Ankur’s brother's age 6 years from now = 32 + 6 = 38 years
Ratio of Ankur’s sister and his brother after 6 years = 3 : 2
⇒ Ankur’s sister's age 6 years from now = $\frac{3}{2}\times 38=57$ years
⇒ Ankur’s sister's present age = 57 - 6 = 51 years
Ratio of Ankur and his sister's present age = 4 : 3
=> Ankur’s present age = $\frac{4}{3}\times 51=68$ years
∴ Ankur’s age 3 years from now = 68 + 3 = 71 years