here is the problem

write a simulation program for a small airport that has only one runway. there will be a queue of planbes waiting to land and a queue of planes waiting to take off. However, only one plane can use the runway ant a time. So there can be only one takeoff and only one landing. Assume that all takeoff take the same amount of time . Assume that all landing take the same amount of time, although this does not need to arrive for landing at random times, but with a specified probability of a plane arriving during any given minute.

where do i start?

needs help!!!!!!!!!!!!!!!!!!!