Present total age of 4 members ⇒24×4=96+(10×4)=136 Preset total age of 6 members (including 2 children) ⇒24×6=144 Sum of the ages of the two children ⇒144−136=8 yrs. Since the difference beween age of two children is 2 year ⇒ The ages of the children are 5 yrs & 3 yrs. ∴ The youngest child's age is 3 years old.