1. Please draw a line segment diagram based on the description of each of the following questions:

1. Two cars A and B leave from A and B at the same time and opposite each other. Car A every hour Car B can travel 55 kilometers, and car B can travel 60 kilometers per hour. After 3 hours, the distance between the two cars is still 40 kilometers. How many kilometers are there between places A and B?

2. Places A and B are 250 kilometers apart. Car A can travel 55 kilometers per hour. Car B leaves from place B 2 hours after it leaves place A. Can travel 60 kilometers per hour. How many hours does it take for car B to meet car A?

2. Only list the formulas and do not calculate:

1. The total length of the Shanghai-Nanjing Expressway is 274.08 kilometers. Two cars drove away from Shanghai and Nanjing at the same time. After 1.2 hours meet. One of the cars travels 118.4 kilometers per hour. How many kilometers per hour does the other car travel?

2. Xiaoxin’s home is 290 meters away from the school. One day, after walking 50 meters to school, he realized that he had forgotten to put on his school uniform, so he returned home to put on his uniform, and then went back to school. How many meters did he walk from home to school in this way?

3. Teams A and B completed 150 machine parts together. It is known that Group A can make 24 parts in 12 minutes, and Group B can make 3 parts per minute. How many minutes did it take Team A to complete this batch of parts?

4. Places A and B are 480 kilometers apart. A passenger car and a truck leave from both places at the same time, traveling in the opposite direction. Four hours later, the two cars are still 80 kilometers apart. It is known that the truck travels 53 kilometers per hour. Kilometers, how many kilometers does the bus travel per hour?

5. Two cars, A and B, travel towards each other from two places 450 kilometers apart and meet each other in 5 hours. It is known that the speed of car A is 1.5 times that of car B, then how many kilometers per hour can car B travel?

3. Application questions:

1. Places A and B are 480 kilometers apart. A car drives from place A to place B at a speed of 52 kilometers per hour and a driving speed of 312 kilometers. After rice, I met a car coming from place B. If the car coming from place B traveled 42 kilometers per hour, do you think the two cars drove out at the same time?

2. A passenger ship and a cargo ship travel in opposite directions at the same time from two ports that are 450 kilometers apart. The passenger and cargo ships travel 25 kilometers per hour, and the freighter travels 30 kilometers per hour. How many kilometers will the two ships be apart after 10 hours? rice?

3. On a straight road, Xiao Ming and Xiao Gang set off from A and B at the same time on bicycles, which are 400 meters apart. Xiao Ming walks 240 meters per minute, and Xiao Gang walks 160 meters per minute. If you keep moving forward at this speed. Will the two of them meet? If you think we will not meet, please write down the reason; if you think we will meet, please tell us how many minutes it will take to meet?

4. A passenger bus drove from point A to point B, traveling 75 kilometers per hour. It was expected to arrive in 3 hours. After traveling for 1 hour, the machine broke down and it took 20 minutes to repair on the spot. If you want to To arrive on time without delay, how many kilometers per hour should we speed up in the future?

5. Two cars A and B are traveling towards each other from two places at the same time. Car A travels 45 kilometers per hour and car B travels 45 kilometers per hour. 42 kilometers. The two cars met 12 kilometers from the midpoint. How many hours have passed since the two cars drove out at the same time before they met? How many kilometers are there between the two places?

6. Two cars, A and B, leave from places A and B which are 360 ??kilometers apart at the same time. It takes 5 hours for car A to reach place B and 6 hours for car B to reach place A.

When car A arrives at point B, how many kilometers is it from place A?

7. Two trains depart from stations A and B at the same time. The express train takes 6 hours and the slow train 9 hours to complete the journey. After 2 hours of departure, the two trains are still 160 kilometers apart. How many kilometers are the stations apart?