Question

A trader mixes 48 kg of rice costing Rs. 35 per kg with 32 kg of rice costing Rs. 50 per kg. How much rice costing Rs. 65 per kg should be added to the mixture so that, by selling the final mixture at 20% profit, the selling price becomes Rs. 54 per kg?

A 10 kg
B 12 kg
C 18 kg
D 16 kg
E None of these
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