Alligation or Mixture problems
In what ratio must water be added to spirit to gain 25% by selling it at cost price?

3 : 4
1 : 4
4 : 1
4 : 3

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Alligation or Mixture problems
In a 40 litre mixture of alcohol & water, the ratio of alcohol and water is 5 : 3. If 20% of this mixture is taken out and the same amount of water is added then what will be the ratio of alcohol and water in final mixture?

1:1
3:1
1:2
2:1

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