Please help me furige out my bac i had 11 beers 4.15% alcohol, 200 ml of 40% alcohol, and a 6oz glass of wine at 13 5 alohol in 13 hours. Slept 7 and then had another 7 beers at 4.15% alcoho. lts its been another 20 hours how in the hell do i calculate my bac out of all that its been 40 hours total elapsed time since my first drink and was 20 hours 20 elapsed time from my first drink till my last?