Train a and train B depart from the two cities at the same time and meet each other in 1.5 hours. Train a travels an average of 58 kilometers per hour, while train B travels an average of how many kilometers per hour? (please answer in two ways)

(1) (2) (168-58 × 1.5) △ 1.5, = 81 △ 1.5, = 54 (km); a: train B travels 54 km per hour on average

The two trains a and B leave from a and B and meet 4.5 hours later. At this time, car a travels 58.5 kilometers more than car B. car a travels 85 kilometers per hour
How many kilometers does car B travel per hour

It can be known that a does not drive more than B in an hour: 58.5 △ 4.5 = 13 km
So the speed of B is: 85-13 = 72 km / h