In a 60 litre mixture of milk and water, the ratio of milk to water is 2: 1. How many litres of water is to be added to this, to make this ratio 1: 2 in the new mixture?
A
56
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B
50
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C
70
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D
60
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Solution
The correct option is D 60 Ratio of milk and water=2:1 2+1=3 Quantity of milk in mixture =23×60=40L Quantity of water=60−40=20 To make ratio 1:2 we add 60L water to the mixture. 40:80=1:2