If you are driving with a blood alcohol content (BAC) of 0.10 percent, you are ____ times more likely to cause an accident than if you were driving while sober.

Drinking alcohol before driving drastically increases the chance of collision. A driver with a blood alcohol content (BAC) of 0.10 percent is seven times more likely to be involved in a crash than a sober driver. A BAC of 0.15 percent increases the risk of collision 25 times, and a BAC of 0.17 percent increases the risk of collision 50 times.