A shopkeeper mixes 15 kg of lentils costing Rs. 40 per kg with 25 kg of lentils costing Rs. 56 per kg. What is the cost of the mixture per kg?
Correct answer B. Rs. 50
Explanation
Total cost = 15 x 40 + 25 x 56 = 600 + 1400 = Rs. 2000 for 40 kg, so cost per kg = Rs. 50.
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