Please show detail work.

Collecting data on traffic accident fatalities, the National Highway Traffic Safety Administration has found that58.7 of the victims have 0.0% blood alcohol content (BAC); 5.8% of the victims have from 0.01 0.07 percent BAC; and 35.5% of the victims have at least 0. 08% percent BAC. For a randomly selected victim, a.a. What is the probability that the victims BAC was at least 0.01%? b.b. Given that the victim had been drinking prior to the accident, what is the probability that this victims BAC was at least 0.08%