Cars and Cuthbert.....blue route

The traffic lights into the Market Place stay on green for 1 minute and red (or amber) for 1 minute.

If five cars go through every time on green, how many cars get through the traffic light between 11am and 12 noon?

If all cars in part (a) have to pay the congestion charge (about £2) how much money would be made for Durham County Council?

Walk into the Market Place and find Charles William Vane Stewart (3rd Marquis of Londonderry)

When was he born? 

When did he die?

How old was he when he died?