Xiaoming goes to the county experimental school by bus, which is 38 kilometers away from home. After getting off the bus, he had to walk 2 kilometers to get to school. Xiao Ming needs 1H from home to school. It is known that the speed of the bus is 9 times that of Xiaoming's walking. Please ask Xiaoming to walk.
3. In order to alleviate the urban traffic congestion and facilitate the citizens to take the bus, a city decided to build bus lanes on the main roads of the city. In order to finish the project three days ahead of schedule, it is necessary to improve the original work efficiency 12%. Suppose it takes x days to complete this project, and find the equation that satisfies X. ..
4. Two kinds of goods with the same weight, the value is 900 yuan and 1500 yuan respectively. It is known that the value of one kind of goods per kilogram is less than that of the second kind of goods, 300 yuan. Find the value of each kilogram of these two commodities respectively.
5. The bus takes 480 kilometers of expressway from A to B and 600 kilometers of ordinary highway from B to A. It is also known that the average speed on the expressway is 45Km kilometers faster than that on the ordinary highway, and the time from the expressway to the second place is half that of the ordinary highway to the second place. Find the time required for the bus to travel from the expressway to the second place.
6. The time required for A to manufacture 90 parts is the same as that required for B to manufacture 120 parts. It is known that A and B manufacture 35 machine parts per hour. Find out how many parts A and B produce per hour.
7. A has money from 400 yuan, and A has money from 150 yuan. If B gives some money to A, at this time, B's money is 10% of A's money. How much should B give A?
Our troops attacked the enemy at the bridge. When we set out, the enemy was 24 kilometers away from the bridge, and our army was 30 kilometers away from the bridge. The speed of our army's urgent March is 1.5 times that of the enemy. As a result, we arrived 48 minutes earlier than the enemy, so we asked our army to speed up.
9. It takes the same time for a ship to sail 80km downstream and 60km upstream. Given the current speed of 3 km/h, find the ship speed in still water.
10. The buyer of a shopping mall predicted that a shirt in this season would sell well in the market, so he bought it for 80 thousand yuan. After it was put on the market, it was really in short supply. The mall bought the second batch of this shirt for176,000, which is twice as much as the first batch, but the unit price is 4 yuan. When this shirt was sold in the shopping mall, there was 65438+ for each 58 yuan.