Give a quick stream of consciousness before answering the following question. How many liters of oil at Rs.40 per liter should be mixed with 240 liters of a second variety of oil at Rs.60 per liter so as to get a mixture whose cost is Rs.52 per liter?\nOptions:\n(A) 120\n(B) 150\n(C) 160\n(D) 180\n(E) 200
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8:12 = 2:3\nIf 240 lrs of the 2nd variety taken then the 1st variety should be taken as 160 lr
The answer: (C).
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