1.A, B two cars start from east and west at the same time. Car A travels 56 kilometers per hour and car B travels 48 kilometers per hour. The two cars met at a distance of 32 kilometers from the midpoint. What's the distance between east and west?
2. Both cars of Party A and Party B travel from East Station to West Station at the same time. Car A travels12km more than car B every hour. After four and a half hours, car A arrives at the West Station without stopping, and immediately returns from the original road, and meets car B at a distance of 31.5km from the West Station. How many kilometers does car A travel per hour?
3. Two people ride bicycles along a 900-meter-long circular track. They traveled in opposite directions from the same place, so they met once in 18 minutes. If they drive in the same direction, and the fast train catches up with the slow train once in 180 minutes, how fast can they ride bicycles?
Both brother and sister leave home for school at the same time. My brother walks 90 meters per minute and my sister walks 60 meters per minute. When my brother arrived at the school gate, he found that he had forgotten his textbook. He immediately went home to get it along the original road and met his sister at 0/80 meters away from the school/kloc-. How far is their home from school?
5. There is a bus with a body 15 meters on the road, traveling from east to west, with a speed of 18 kilometers per hour. On the sidewalk by the roadside, there are two young people, A and B, practicing long-distance running. A from east to west, b from west to east. At a certain moment, the car caught up with A, and after 6 seconds, the car left A; Half a minute later, the car met the oncoming B; Two seconds later, the car left B. How many seconds later will A and B meet?
6. The distance between Party A and Party B is 360 kilometers, and buses and trucks leave from Party A for Party B at the same time. The speed of the truck is 60 kilometers per hour and the speed of the bus is 40 kilometers per hour. After the truck arrives at the second place, it stays for 0.5 hours and returns to the first place at the original speed. A few hours after starting from the first place, the two cars met.
7. The train and the local train leave from Party A and Party B at the same time, and meet in 12 hours. After the encounter, the express train took another 8 hours to reach B, and how many hours did the local train take to reach A?
8. The distance between the two places is 380 kilometers. There are two cars leaving from two places at the same time. Originally, car A planned to run at 36 kilometers per hour and car B planned to run at 40 kilometers per hour, but when driving, car A changed speed and left at 40 kilometers per hour. How many kilometers did B car travel less than originally planned when they met?
9. The distance between east and west towns is 240 kilometers. A bus goes from Dongzhen to Xizhen at 8 am, and a truck goes from Xizhen to Dongzhen at 9 am. At noon, the two cars met at the midpoint of the two towns. If both cars leave at 8: 00 a.m. with the same speed, how many kilometers are the two cars apart by morning 10?
10. The bus and truck leave from two stations at the same time. Buses travel 54 kilometers per hour and trucks travel 48 kilometers per hour. After the two cars met, they continued to drive at the original speed. The bus returns immediately after arriving at the second stop, and the truck returns immediately after arriving at the first stop. When the two cars meet again, the bus travels 2 16 kilometers more than the truck. How many kilometers is the distance between the two stops?
1 1 "Bayi" Festival, a young pioneer went from school to the PLA barracks 17 kilometers away, with a speed of 4 kilometers per hour. 0.5 hours after the departure, the People's Liberation Army rushed to meet, 2 kilometers faster than the Young Pioneers. How many hours later, they met on the road?
12, Station A is 440 kilometers away from bilibili. A cart and a car set off from two stations relatively. The cart travels 35 kilometers per hour and the car travels 45 kilometers per hour. A swallow set out with the cart at a speed of 50 kilometers per hour and flew to the cart. After meeting the cart, it turned back and flew to the cart. When it meets a cart, it flies back to the cart, and so on. How many kilometers did the swallow fly before the two cars met?
13, the distance between the two places is1120km, and the two trains start in opposite directions at the same time. The first train travels 60 kilometers per hour and the second train travels 48 kilometers per hour. When the second train left, a pigeon flew out of it and flew to the first train at a speed of 80 kilometers per hour. When the pigeon meets the first train, how far is the second train from its destination?
14, two cars leave from a and b at 8: 00 am, and the distance between the two places is 2 10 km. The first car stopped for 45 minutes while repairing the car, and the second car stopped for half an hour because of refueling. As a result, they met at 1 1 in the morning. If the first car travels 40 kilometers per hour, how many kilometers does the second car travel per hour?
15, Xiao Gang and Xiao Yong came by bike from two opposite places at the same time. Xiao Gang met Xiao Yong in 5/8 of the whole journey. Xiao Yong continued to advance at the speed of 10 km per hour, and ran the rest of the distance in 2.5 hours, seeking Xiao Gang's speed?
16, A and B run back and forth on the straight road 90 kilometers apart. A runs at a speed of 3 meters per second and B runs at a speed of 2 meters per second. If they start at both ends of the straight road at the same time, how many times will * * * meet when they finish running 10 minutes?
17, two athletes, one male and one female, practiced running on a slope with a length of 1 10 meter (A at the top and B at the bottom). Both of them start from point A at the same time and keep running back and forth between point A and point B. If the male athlete's uphill speed is 3 meters per second and the downhill speed is 5 meters per second; The uphill speed of female athletes is 2 meters per second, and the downhill speed is 3 meters per second. So how many meters away from point A is the place where two people meet head-on for the second time?