Question

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.

• A. ₹18.5
• B. ₹18
• C. ₹17
• D. ₹17.5

Answer 1

Answer:

B. ₹18

This is a weighted average problem.

Find total cost

• Copper: (2 \times 15 = 30)

• Zinc: (3 \times 20 = 60)

Total cost = (30 + 60 = 90)

Total quantity

$2 + 3 = 5 \text{ kg}$

Average price

$\frac{90}{5} = 18$

Final Answer:

₹18 per kg