2 kg of copper at ₹15 per kg is mixed with 3 kg of zinc at ₹20 per kg. Find the average price of the mixture.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. ₹18.
Copper = 2 × 15 = ₹30
Zinc = 3 × 20 = ₹60
Total cost = 30 + 60 = ₹90
Average price per kg = 90/(2 + 3) = 90/5 = ₹18/kg