First, please draw a line chart according to the description of each question below:

1, two cars, A and B, leave from A and B relatively simultaneously. Car A can travel 55 kilometers per hour, and car B can travel 60 kilometers per hour. Three hours later, the two cars are still 40 kilometers apart. How many kilometers is it between A and B?

The distance between a and b is 250km. Car A can run 55 kilometers per hour. It takes 2 hours to leave from A, and the B train can run 60 kilometers per hour. How many hours does it take for B car to meet A car?

Second, only column types are not calculated:

1, the total length of Shanghai-Nanjing Expressway is 274.08 kilometers. Two cars left Shanghai and Nanjing at the same time, 1.2 hours later they met. One car travels 1 18.4 kilometers per hour, and how many kilometers does the other car travel per hour?

Xiao Xin's home and school are 290 meters apart. One day, he walked 50 meters to school and found that he forgot to wear his school uniform. He put it on at home and then went to school. So how many meters did he walk from home to school?

3. Group A and Group B completed 150 machine parts. It is known that group A can make 24 parts in 0/2 minute, and group B can make 3 parts per minute. How many minutes did it take Group A to complete this batch of parts?

4. The distance between Party A and Party B is 480 kilometers, and the bus and truck leave the two places at the same time and drive in opposite directions. Four hours later, the distance between the two cars is still 80 kilometers. It is known that trucks travel 53 kilometers per hour. How many kilometers does this bus travel per hour?

Two cars, A and B, walked in opposite directions from two places 450 kilometers apart and met five hours later. It is known that the speed of car A is 0.5 times that of 65438+ car B, so how many kilometers can car B travel per hour?

Third, the application problems:

1, the distance between Party A and Party B is 480km. A car travels from A to B at a speed of 52 kilometers per hour. After driving to 3 12 km, you meet a car coming from Party B. If the car coming from Party B is driving at a speed of 42 km/h, calculate whether the two cars leave at the same time.

Passenger ships and cargo ships leave from two ports 450 kilometers apart at the same time. The passenger and cargo speed is 25 kilometers per hour, and the cargo ship speed is 30 kilometers per hour. /kloc-How many kilometers are the two rounds apart after 0/0 hour?

On a straight highway, Xiaoming and Xiaogang ride bicycles from A and B, which are 400 meters apart. Xiaoming walks 240 meters per minute, and Xiaogang walks 160 meters per minute. If you keep going at this speed. Will they meet? If you think you won't meet, please give reasons; If you think you will meet, ask to meet in a few minutes.

4. A bus from A to B, with a speed of 75 kilometers per hour, is expected to arrive in 3 hours. After driving 1 hour, the machine broke down and was repaired on site for 20 minutes. How many kilometers should I accelerate every hour to arrive on time without delay?

5. Two cars, A and B, drive in opposite directions from two places at the same time. Car A travels 45 kilometers per hour and car B travels 42 kilometers per hour. Two cars meet at the midpoint 12km. How many hours passed after the two cars left at the same time? How many kilometers are the two places apart?

6. Cars A and B leave from A and B which are 360 kilometers apart at the same time. It takes 5 hours for bus A to arrive at B, and 6 hours for bus B to arrive at A. When bus A arrives at B, how many kilometers is bus B from A?

7. Two trains leave from Station A and bilibili at the same time, with a 6-hour express and a 9-hour local train. Two hours later, the distance between the two trains is160km. How many kilometers is the distance between Station A and bilibili?