Alcoholic drinks contain ethanol. 10cm3 of ethanol is called one unit of alcohol. Men are advised to drink a maximum of 21 units of ethanol a week, while women are advised to drink a maximum of 14 units. Wine contains about 14% ethanol by volume.

Question

A) a bottle of wine contains 750cm3 of wine. Calculate the volume of ethanol in a bottle of wine
B) how many bottles of wine are equivalent to the maximum amount of ethanol men and women are advised to drink in on week?

Answer 1

14% (that's v/v) means 14 cc ethanol/100 cc wine so
750 cc wine x (14 cc ethanol/100 cc wine) = about 105 cc ethanol.

14 units x (10 cc ethanol/unit) = 140 cc ethanol
140 cc ethanol x (1 bottle/105 cc ethanol) = ? bottles