Lenny drank a 5-ounce glass of wine and two 12-ounce bottles of beer during dinner. The pure alcohol consumed by him is 1.8 OUNCES ( ONE AND A HALF OUNCES).
Two 12 ounces of Beer (5% ABV) = 12 X 2 X 0.05 = 1.2 ounces of pure alcohol.
5 ounces of Wine (12% ABV) = 5 X 0.12 = 0.6 ounces of pure alcohol.
Thus total ounces of pure alcohol consumed = 1.2 + 0.6 = 1.8 ounces
