15 lts of water containing 20% alcohol, then added 5 lts of water. What is % alcohol  Pick one:  A) 15%  B) 18%  C) 20%  D) 22%  E) 25%
in 15 ltr of mixure, 3 ltr alcohal and 12 ltr pure water.   when 5 ltr water is added, then   3 ltr alcohal in 20 ltr mixture means 15% alcohal in mixture.   15%NSWER:15%
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15 lts of water containing 20% alcohol, then added 5 lts of water. What is % alcohol