Car a and car B start from a and B at the same time and travel in opposite directions. Car a travels 40 kilometers per hour, and car B travels 50 kilometers per hour. If the two cars return immediately after they arrive at their destination, they will meet 225 kilometers away from B. in fact, car B wastes a period of time due to refueling when they arrive at a, making it 440 kilometers away from a Some people don't

Car a and car B start from a and B at the same time and travel in opposite directions. Car a travels 40 kilometers per hour, and car B travels 50 kilometers per hour. If the two cars return immediately after they arrive at their destination, they will meet 225 kilometers away from B. in fact, car B wastes a period of time due to refueling when they arrive at a, making it 440 kilometers away from a Some people don't

Let a and B be x km apart
3x/(40+50)=(x+225)/40
120x=90x+225*90
x=675
Parking time of vehicle B in place a:
(675*2-440)/40-(675+440)/50
=910/40-1115/50
=22.75-22.3
=0.45 (hours)
=27 (minutes)
A: car B stayed in a for 27 minutes

A. B is 15 km away from each other. Car a starts from a at 50 km / h in the front and car B starts from B at 40 km / h in the back. The two cars start at the same time and travel in the same direction (along the direction of BA). How many hours later, are the two cars 30 km apart?

A: after 1.5 hours, the distance between the two cars is 30 kilometers

A and B cars travel from a and B. a car travels 60 kilometers per hour and B car travels 50 kilometers per hour. The two cars meet at a distance of 40 kilometers from the midpoint
How many hours did these two cars travel?

40×2÷（60-50）
=80÷10
=8 hours

A and B both drive from a to B. car a travels 40 kilometers per hour, car B travels 50 kilometers per hour. Half an hour after car a starts, car B starts,
1. How many hours can car B catch up with car a?
2. How many hours, 10 kilometers apart?

1.
When vehicle B starts, the difference between the two vehicles is 40 × 0.5 = 20 km; vehicle B overtakes 50-40 = 10 km per hour; therefore, it takes 20 / 10 = 2 hours for vehicle B to overtake vehicle a
two
After driving for 1 hour, car B is 10 kilometers behind car a; after driving for 3 hours, car B is 10 kilometers ahead of car a