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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- CSIR NET
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If the question is saying 1/5th of the total y are we considering 90. should not we consider 100
if the question is saying 1/5th of the total y are we considering 90. should not we consider 100
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Rahul kumar![best-answer]()
Go through the points for solution: Step 1: Milkman adds 10 L water to 90 L milk. So initially water to milk ratio is 10:90 i.e. in 100 L of total quantity 90 L is pure milk and 10 L is water. Step 2: He sells 20 percent of the total quantity i.e. out of 100 L of total quantity he is selling 20 L. since water to milk ratio in the sold quantity will remain same as initial which means sold quantity of 20 L contains 18L milk and 2 L water. So now the remaining 80 L quantity contains 72 L (= 90L - 18L) milk and 8 L (= 10L - 2L) water. Step 3: Now he adds water of same amount he has already sold (20 L) in the remaining quantity (72 L milk and 8 L water). So the final amount of milk is 72 L and water is 28 L (= 20 L + 8 L). So the ratio of water to milk is 28:72 I hope this solution will help you