
Ok, you are driving a bus. At the first stop 1 kid gets on. 10 feet later is the next stop where 1 kid gets on. The third stop is a distant 20 feet away, and 1 more kid gets on.
At this point you are leading a caravan of at least 20 cars filled with people who are wondering why can't these kids all walk to one bus stop. The handsome driver right behind you has a camera-phone.
Another 15 feet down the road you stop again and 1 more kid gets on.
Question: How old is the bus driver?