How much pure alcohol has to be added to 400 ml of a solution containing 15% of alcohol to change the concentration of alcohol in the mixture to 32% ?

How much pure alcohol has to be added to 400 ml of a solution containi

1.	How much pure alcohol has to be added to 400 ml of a solution containing 15% of alcohol to change the concentration of alcohol in the mixture to 32% ?
A.	60 ml
B.	100 ml
C.	128 ml
D.	68 ml
Answer» C. 128 ml

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How much pure alcohol has to be added to 400 ml of a solution containing 15% of alcohol to change the concentration of alcohol in the mixture to 32% ?

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