SOLUTION: a man bought 10 litres of kerosene oil at rs 1.90 per litre,12 litres at rs 1.80 per litre and 8 litres at rs 2.05 per litre and mixed them together.Find the average cost of litre

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Question 988019: a man bought 10 litres of kerosene oil at rs 1.90 per litre,12 litres at rs 1.80 per litre and 8 litres at rs 2.05 per litre and mixed them together.Find the average cost of litre of the mixture
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Average cost/ litre = +%28+10%2A1.9+%2B+12%2A1.8+%2B+8%2A2.05+%29+%2F+%28+10+%2B+12+%2B+8+%29+
+%28+19+%2B+21.6+%2B+16.4+%29+%2F+30+
+57+%2F+30+=+1.9+
Average cost/ litre = rs 1.90