Question
A merchant mixes two varieties of rice of 6 kg and 4 kg,
which cost him Rs. 7 and Rs. 5 per kg, respectively. What is the cost price (in Rs.) of the mixture per kg?Solution
Required cost price = (7 × 6 + 5 × 4) ÷ (6 + 4) = (62 / 10) = Rs. 6.2
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