If 10 litres of an oil of Rs.50 per litres be mixed with 5 litres of another oil of Rs.68 per litre then what is the rate of mixed oil per litre?\nOptions:\n(A) Rs.49.17\n(B) Rs.51.03\n(C) Rs.56\n(D) Rs.55.33\n(E) None of the above Let's think first. Stream of consciousness:
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50*10 = 500\n68*5 = 340\n840/15 = 56
So, the answer is (C).
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