How much alcohol do you have to drink for a 3.0 blood alcohol content level?
If that was not a typo and you did mean 3.0, then it’s impossible. Anyone who tried to drink that much would be dead long before they even got close. Did you mean .30? Because .30 is extremely drunk and most people pass out around or before the .30 level. At .35 you can go into a coma and at .40, you can die of alcohol poisoning. The number of drinks to reach .30 can be anywhere from 10 to about 30. Since your original question was for 3.0, I would guess that it would take anywhere from 100 to 300 drinks to reach that level. Which could never be accomplished.