If 2613 passengers travel everyday through Khulna airport, 1701 passengers travel through Chittagong airport, 1235 passengers travel through Dhaka airport and 8822 passengers travel through airport. How many passengers, in total, travel through these four cities everyday?
Three classes will go to the book fair in Khulna. The first class will arrive at the book fair at the time shown on the clock below:
Each class will spend 30 minutes at the book fair and then leave. The second class arrives at the book fair after the first class leave, and the third class will arrive after the second class leave. At what time will the third class leave the book fair?