a milkman makes 20% profits by selling with mixed with water at ₹ 9 per liter. If the cost of 1 literally pure milk cost is ₹ 10 then the ratio of milk and water in the said of mixture is
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Description for Correct answer:
According to question,
SP of mixture of milk and water = Rs. 9
Profit = 20%
∴ CP of mixture of milk and water
=9×100120 = Rs. 7.5
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