1.

A shopkeeper buys milk at Rs. 36/litre and mixes 200ml/litre water in it. If he sells the mixture at Rs. 40/litre, find his percentage profit.1). 10%2). 11.1%3). 20%4). 33.3%

Answer»

Since, the shopkeeper mixed 200 ml WATER in 1 litre of milk, then he PREPARED (1000 + 200 = 1200 ml = 1.2 litre of milk-water MIXTURE in Rs. 36

COST price of 1 litre milk-water mixture = 36/1.2 = Rs. 30

Now, selling price of 1 litre milk-water mixture = Rs. 40

Profit earned per litre = 40 – 30 = Rs. 10

∴ Profit percentage = (10/30) × 100 = 33.3%


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