A 6 litre sol is 30% alcohol .How many litres of pure alcohol must be added to produce a sol that is 50% alcohol ?
Select the correct option
A) A.0.6 B) B.1 C) C.2.1 D) D.3 E) E.2.4
30% of 6 = 1.8   50% of 6 = 3   shortage is 1.2   so we need to have 1.2/50% to get 50% alcohol content.   = 2.4 E.2.4
<result>E</result>
A 6 litre sol is 30% alcohol .How many litres of pure alcohol must be added to produce a sol that is 50% alcohol ?