A 6 litre sol is 35% 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.1.8
E) E.5.4
35% of 6 = 2.1   50% of 6 = 3   shortage is 0.9   so we need to have 0.9/50% to get 50% alcohol content.   = 1.8 D.1.8
<result>D</result>
A 6 litre sol is 35% alcohol .How many litres of pure alcohol must be added to produce a sol that is 50% alcohol ?