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10 kg of sugar costing Rs. 45 per kg is mixed with 15 kg of sugar costing Rs. 30 per kg. Find the average cost of per kg of mixed sugar.
1. Rs. 25 per kg
2. Rs. 36 per kg
3. Rs. 45 per kg
4. Rs. 54 per kg

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Best answer
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.

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