15 lts of water containing 20% alcohol, then added 5 lts of water. What is % alcohol.

2 Answers on this Question

1. 15 litre water contains 20% alcohal ie. 12 (water)+ 3
   (alcohol).
   after adding 5 liter water it becomes 12+5=17 (water)& 3
   (alc.).
   ie. 17:3 and answer will be 85:15. ie. 15%.

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2. 15%

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