5% of 50L = 2.5L Alcohol.
Alcohol added = 1.5L
Total Alcohol = 1.5 +2.5= 4L
Total solution formed after mixing alcohol and water = 50 + 1.5 +8.5 = 60L
New % of alcohol = 4/60 * 100
= 40/6
= 20/3 = 6 2/3
Thus answer is D
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kaplan question
Source: Beat The GMAT — Problem Solving |
Alchohol - 5% of 50 = 2.5 Litres
Thus Water = 50-2.5 = 47.5 Litres
After adding alchohol and water ;
Alchohol = 2.5 + 1.5 = 4; Water = 47.5 + 8.5 = 56; Total = 56+4 = 60
Hence % of alchohol = 4/60 * 100 = 20/3 = 6 2/3. Hence D
Thus Water = 50-2.5 = 47.5 Litres
After adding alchohol and water ;
Alchohol = 2.5 + 1.5 = 4; Water = 47.5 + 8.5 = 56; Total = 56+4 = 60
Hence % of alchohol = 4/60 * 100 = 20/3 = 6 2/3. Hence D
