Prepare a full decision table for the following case and then simplify. An airline offers only flights to Russia and Asia. Under special conditions, a discount is offered on the normal airfare: Children 2 and under travel for free. Passengers older than 2 but younger than 18 years are offered a discount of 40% for all destinations. Passengers older than or equal to 18 with destinations in Russia are offered a discount of 20% Passengers who stay at least 6 days at their destination receive an additional discount of 10% except children 2 and under