Ans:Without using a calculator - You are driving a bus from London to
Milford Haven in Wales . In London , 17 people get on the bus.
In Reading , 6 people get off the bus and 9 people get on.
In Swindon , 2 people get off and 4 get on.
In Cardiff , 11 people get off and 16 people get on.
In Swansea , 3 people get off and 5 people get on.
In Carmathen, 6 people get off and 3 get on.
You then arrive at Milford Haven ..
Without scrolling back to review, how old is the bus driver?