The distance between the two cities is 564 km. Two trains leave the two cities at the same time and meet each other in 6 hours. It is known that the speed of the first train is 2 km faster than that of the second train per hour. What are the speeds of the two trains?
(564-6 × 2) △ 6 / 2, = (564-12) △ 6 / 2, = 552 / 6 / 2, = 46 (km / h); 46 + 2 = 48 (km / h). A: the speed of the first train is 48 km / h, and that of the second train is 46 km / h