A man buys milk at Rs. 2.40/litre. He adds one third water to it and sells the mixture at RS. 2.88/litre. Find his gain%?
Explanation:
Recognize, for every 3 litre of milk purchased, 4 litres of mixture is sold.
CP for 3 litres milk = 3 × Rs. 2.40 = Rs. 7.20
SP for 4 litres mixture = 4 × Rs. 2.88 = Rs. 11.52
∴ Profit% = (11.52 - 7.20)/7.20 = 0.6 = 60%
Hence, option (d).
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