42 litres of milk at ₹25 per litre is mixed with 28 litres of milk at ₹40 per litre. Find the average price of the mixture.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. ₹31.
Total cost of the first batch of milk = 42 × 25 = 1050
Total cost of the second batch of milk = 28 × 40 = 1120
Total volume of the mixture = 42 + 28 = 70 litres
Total cost = 1050 + 1120 = 2170
Average price = 2170/70 = 31
Therefore, the average price of the mixture is ₹31 per liter.