A milkman mixes water costing ₹0/litre with milk costing ₹20/litre. If the mixture is sold at ₹16/litre and there is neither gain accrued nor loss incurred in the transaction, find the ratio of milk to water in the mixture.
4 : 1
No gain and no loss means the cost price of the mixture is ₹16 per litre.
By alligation: milk (₹20) and water (₹0) give mean ₹16.
Milk : water = (16 − 0) : (20 − 16) = 16 : 4 = 4 : 1.
Hence, the answer is 4 : 1.
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Important Questions from Mixture Problems
If the ratio of alcohol and water in a mixture of 85 litres is 11 ∶ 6. How much water should be added to make the ratio 5 ∶ 3?
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A solution of milk and water contains milk and water in the ratio of 3 : 2. Another solution of milk and water contains milk and water in the ratio of 2 : 1. Forty litres of the first solution is mixed with 30 litre of the second solution. The ratio of milk and water in the resultant solution is:
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