Multiple Choice Questions729 mL of a mixture contains milk and water in the ratio 7 : 2. How much more water is to be added to get a new mixture containing milk and water in the ratio 7 : 3?
52 mL
60 mL
71 mL
81 mL
D.
81 mL
Quantity of mixture = 729 mL, Milk : Water = 7 : 2
Quantity of milk:
∴ Water = 729 - 567 = 162 mL
Let x water be added for new mixture:
∴ Quantity of water to be added = 81 mL
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