Detailed Solution: Total expenditure of the family = Rs. 25000 ∴ Total expenditure on food = Rs. 25000 × 40/100 ⇒ Rs. 10000 ∴ Total Expenditure on Others = Rs. 25000 × 15/100 ⇒ Rs. 3750 ∴ Total expenditure on Education = 25000 × 12/100 ⇒ Rs. 3000 ∴ Total Expenditure on Entertainment = Rs. 25000 × 10/100 ⇒ Rs. 2500 ∴ Average expenditure on food and others = Rs. (10000 + 3750)/2 ⇒ Rs. 6875