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In a mixture of 60 litres, the ratio of milk to water is 7 : 5.
How many litres of water must be added to make the ratio 7 : 6?

Class 7Ratios and PercentagesComparing Quantities
  • A6
  • B10
  • C4
  • D5

Step-by-Step Solution

Milk = of 60 = 35 L, water = of 60 = 25 L. Milk stays 35 L. For ratio 7 : 6, water must be of milk = 35 = 30 L. Water to add = 30 - 25 = 5 L.
Answer: D) 5

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