How many beers can I drink before breathalyzer?

A 180-lb man may be able to drink 3.5 regular 12-ounce beers in one hour and keep his Blood Alcohol Concentration (BAC) under the legal limit of . 08%. Similarly, a 140-lb woman may be able to consume 2.5 regular beers in an hour and maintain a BAC of less than . 08%.



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For the average person, it only takes about three or four drinks in one hour to reach a BAC of 0.08. Given the general rule, if your blood alcohol content is at the limit of 0.08, it would go down to 0.065 after one hour.

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Many experts believe that it takes about 3 drinks (12 oz beer, 5 oz glass of wine, or a shot of liquor) taken within an hour for a 100 lb person to reach . 08% BAC. Other general guidelines include: At 140 lbs it takes about four drinks an hour to reach a .

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What is 3 times over the legal limit of alcohol? The legal limit of alcohol is . 08%. Three times the legal limit would be 0.24%.

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