Question

The cost of type-I oil is Rs.40 per litre and type II oil is Rs.45 per litre. If both type-I and
type-II are mixed in the ratio of 3: 2, then the price per litre of the mixture of oil is.
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Answer 1

Answer:

then total cost of 4 litre oil = 3*40 + 1*45 = 165. so, cost per litre of mixture = 165/4 = 41.25 rupees.