Question
A vendor mixes 4 kg of oil at Rs. 10 per kg with 6 kg at
Rs. 6 per kg. What is the cost price (in Rs.) of the mixture per kg?Solution
Required cost price = (6 × 4 + 6 × 10) ÷ (4 + 10) = (84 / 14) = Rs. 6.0
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