An airplane covered the ff. distances in three separate trips.
Hongkong-Manila: 1116 kilometers
Singapore-Manila: 2391 kilometers
Korea-Manila: 2601 kilometers

A. What is the average distance traveled by the airplane in the three trips?

B. If the airplane travels with an average speed of 760km/h, how long will it take the airplane to travel in each flight? which trip took the longest time to travel?