Correct Answer - Option 2 : Rs. 36 per kg
Given
Cost price of one type of sugar = Rs. 45 per kg
Cost Price of second type of sugar = Rs. 30 per kg
Formula used
Average = Sum of all observation/Number of observation
Calculation
Total cost price of sugar = (10 × 45) + (15 × 30)
⇒ 450 + 450
⇒ 900
Total sugar = 10 kg + 15 kg
⇒ 25 kg
Average cost of sugar = 900/25
⇒ 36 per kg
∴ Average cost of mixed sugar is Rs. 36 per kg.