hello, could you provided me with the break down also please

Q2b A man is arrested after driving a car which has been involved in an accident at 3.00am. Assume that reliable eyewitnesses confirm that the driver last drank an alcoholic drink at least two hours earlier. A blood sample was taken at 5.00a.m. that same morning which showed a blood alcohol concentration of 70mg of ethanol per 100ml. Was the driver likely to be above the limit of 80mg of ethanol per 100ml of blood at the time of the accident? You should also clarify what each term stands for in any equation you use. K varies significantly from one person to the next. The lowest likely rate of elimination is 12.5mg of ethanol per 100ml of blood per hour, whereas the highest rate is 25mg of ethanol per 100ml of blood and the average rate is 18.7mg per 100ml of blood per hour (Ferner 1996)