The blood alcohol concentration (BAC) of a person who has been drinking is approximated by the following formula. BAC = number of oz × % alcohol × 0.075 ÷ body wt in lb - hr of drinking × 0.015.

Calculate the BAC to the nearest thousandth for a 135-lb woman who, in 3 hr, has consumed three 12-oz beers (36 oz), each having a 4.0% alcohol content.