1. Master and apprentice * * * process 170 parts at the same time, and the number of parts processed by master is more than that of apprentice 1/4 1/3, so how many parts has apprentice * * * processed?
2. Both a cart and a car are driving from place A to place B, and the speed of the cart is 80% of that of the car. It is known that the big car started 17 minutes earlier than the small car, but it stopped at the midpoint of the two places for 5 minutes before continuing to B. However, after the small car started, it went straight to the second place without stopping. Finally, the bus came second before the bus. It is also known that the bus departs from the first place at 10 in the morning. So when did the bus catch up with the bus in the morning?
3. For a manuscript, it takes 14 hours for Party A to type alone, and 20 hours for Party B to type alone. If Party A enters 65,438+0 hours first, Party B will take over 65,438+0 hours, and then Party A will take over 65,438+0 hours. .........................................................................
There are 3 yellow balloons in 4.2 yuan and 2 flower balloons in 3 yuan. The school bought 32 balloons, of which 4 flower balloons are less than yellow balloons. What balloons do schools spend more money on?
Xiaoming walks from home to school in the morning. When he ran halfway, his father found that Xiao Ming's math book was left at home, and then he rode to deliver it to Xiao Ming. When he caught up, Xiao Ming still had 3/ 10 to go. Xiao Ming got on his father's car at once and was sent to school by his father, so Xiao Ming arrived at school five minutes earlier than walking alone. How long does it take Xiaoming to walk from home to school?
6. Car A and car B both start from place A and pass through place B to place C. The distance between the two places is equal to the distance from place B to place C. The speed of car B is 80% of that of car A. It is known that car B started earlier than car A 1 1 minute, but it stayed in place B for 7 minutes, but car A drove all the way to place C. Finally, car B was later than car A.
7. Two cleaning vehicles, A and B, perform road cleaning tasks between things. It takes 10 hour for car A to be cleaned alone, and 15 hour for car B to be cleaned alone. Two cars leave from east and west at the same time. When they met, car A was cleaner than car B12km. How many kilometers is it between East and West?
8. At present, there are 4 containers weighing 3 tons, 5 containers weighing 2.5 tons, 14 containers 1 0.5 tons, and 7 containers weighing1ton. So how many cars with a load of 4.5 tons are needed to transport all the containers at once?
2. Selected questions on the first day of the Olympic Games.
1.a, b, c, d, e, and 8, and the sum of squares is 16. Find the maximum value of e.
2. Party A, Party B and Party C plant trees in plots A and B respectively, with 900 trees in plot A and 250 trees in plot B. It is known that Party A, Party B and Party C can plant 24, 30 and 32 trees every day, of which Party A plants trees in plot B, and Party B plants trees in plot A first, and then moves to plot B. ..
3. There are three grasslands with an area of 5 15 and 24 mu respectively. The grass on the grassland is as thick and grows as fast. The first grassland can feed 10 cows for 30 days, and the second grassland can feed 28 cows for 45 days. How many cows can eat on the third grass for 80 days?
3. A project, contracted by both parties, can be completed in 2.4 days and needs to be paid 1800 yuan; Contracted by Team B and Team C, it can be completed in 3+3/4 days, and it needs to be paid 1500 yuan; Contracted by two teams, Party A, Party B and Party C, it can be completed in 2+6/7 days at a cost of 1.600 yuan. On the premise of ensuring the completion within one week, which team will spend the least?
There is a rectangular iron block in the cylindrical container. Now turn on the tap and pour the water into the container. In 3 minutes, the water surface is just above the top of the cuboid. /kloc-After 0/8 minutes, the container has been filled with water. It is known that the height of a container is 50 cm and the height of a cuboid is 20 cm. Find the ratio of the bottom area of a cuboid to the bottom area of a container.
Two bosses, A and B, bought a fashion at the same price, and B bought 1/5 sets more than A, and then they sold them at profit margins of 80% and 50% respectively. After both of them were sold out, A still made more profits than B, just enough for him to buy 65,438+00 sets of this fashion, which A bought at the beginning.
6. There are two water pipes A and B, and water is injected into two pools with the same size at the same time. At the same time, the water injection ratio of A and B is 7: 5. After 2+ 1/3 hours, the sum of the water injected into A and B is just a pool. At this time, the water injection rate of pipe A is increased by 25%, while pipe B remains unchanged.
3. Selection of the first day of the Olympic Games
1. The sailing speed is 60m/min. In a river with a velocity of 20m/min, the ship travels from an upstream port to a downstream place, and then returns to its original place. * * * How many meters did the ship walk from the upstream port to a place downstream in 3 hours and 30 minutes?
2. Granary A contains 43 tons of flour, and Granary B contains 37 tons of flour. If the flour from granary B is put into granary A, after granary A is full, the remaining flour from granary B accounts for 1/2 of granary B's capacity. If the flour from granary A is put into granary B, after granary B is full, the remaining flour from granary A accounts for 1/3 of granary A's capacity. How many tons of flour can each granary hold?
3. When the number A is divided by the number B and the number B is divided by the number C, the quotient is equal and the remainder is 2. The sum of the numbers A and B is 478. So what is the sum of a, b and c?
4. Car A drives from A to B, and if it slows down 10%, it will arrive later than the original time 1 hour. If the speed is increased by 20% on the basis of the original speed 1 80km, it will arrive1hour earlier than the original time. What's the distance between a and b?
5. A school participated in the military training queue performance competition and organized a phalanx team. If there are 60 students in each class, there must be at least 4 classes in this phalanx, and if there are 70 students in each class, there must be at least 3 classes in this phalanx. How many people should this phalanx consist of?
6. Three lathes, A, B and C, are used to process square and round parts. It is known that two out of every three parts machined by lathe are round; Three out of every four parts machined by lathe B are round; Four fifths of the parts processed by lathe C are round. On this day, three lathes * * * processed 58 round parts, and the number ratio of square parts processed was 4: 3: 3. So how many parts were processed by the three lathes on this day?
4. Selection of the first day of the Olympic Games
1. The standard for charging electricity in a certain place is: the monthly electricity consumption does not exceed 50 degrees, and the electricity fee is charged at 50 cents per degree; If it exceeds 50 degrees, the excess will be charged at 80 points per degree. Every month, user A pays 3 yuan and 30 cents more than user B. How many kWh did users A and B use this month?
Master Wang plans to process a batch of parts in 2 hours. When there were 160 parts left, the machine broke down and the efficiency was lower than before 1/5. As a result, the task was completed 20 minutes later than originally planned. How many parts are there in this batch?
3. Mom gave Honghong some money to buy New Year cards, including A, B and C. Each card of A is 1.20 yuan. How much did Mom give Hong Hong to buy a card instead of 8 cards B and 6 cards B? How much is the second card?
An old man has five sons and three houses. Before he died, he made a will and gave three houses to his three sons. As compensation, the three sons who were assigned to the house each took out 1.200 yuan and divided it equally among the two sons who were not assigned to the house. Everyone says this distribution is fair and reasonable, so how much is each house worth?
Xiaoming and Xiaoyan have less than 20 albums. If Xiaoming gives Xiaoyan an A, Xiaoming's album will be twice as big as Xiaoyan's; If Xiaoyan gives it to Xiao Amin, Xiao Ming's picture book is three times as big as Xiaoyan's. How many picture books do Xiaoming and Xiaoyan have?
6. There are red, yellow and white balls *** 160. If 1/3 of the red ball, 1/4 of the yellow ball and 1/5 of the white ball are removed, 120 remains. If 1/5 of the red ball, 1/4 of the yellow ball and 1/3 of the white ball are removed, 1 16 remains. How many yellow balls are there? (2) How many red balls and white balls are there?
5. Selection of the first day of the Olympic Games
1. The length of circular metal wire is 30m, and three metal wires with length A and five metal wires with length B are intercepted. If two metal wires with length b are intercepted, the remaining metal wires are 0.4m shorter, and if two metal wires with length a are intercepted, they are 2m shorter. How many meters is the length a equal to?
2. A company wants to transport two kinds of building materials, A and B, to the construction site. Building materials A weigh 700kg each, including 120 * *, and building materials B weigh 900kg each, including 80 * * *. It is known that a car can transport up to 4 tons at a time, so how many times do five identical cars have to be transported at the same time?
3. The distance from Wang Lijia to the school is longer than the distance to the gymnasium 1/4. One day, Wang Li watched the game in the gym and walked home in 17 minutes. After a short rest, it took him 25 minutes to walk to school, which was slower than coming back from the gym 15 meters. How far is it from Wang Lijia to school?
4. Master and apprentice cooperate to complete a project. Because of their good cooperation, the master's work efficiency has been improved110, and the apprentice's work efficiency has been improved 1/5. After six days of cooperation, two-fifths of the whole project was completed, and then the apprentice worked alone for six days. At this time, the project still has 10.
5. Students in five classes of Grade 6 planted 65,438+000 trees. It is known that the number of trees planted in each class is different, and the ranking from the most to the least is 1 class, class 2, class 3, class 4 and class 5. It is also known that the number of trees planted in 1 is the sum of the number of trees planted in Class 2 and Class 3, and the number of trees planted in Class 2 is the sum of the number of trees planted in Class 4 and Class 5.
6. A runs 13 km per hour, B runs 1 1 km per hour, and B runs 20 minutes longer than A. As a result, B runs 2 km longer than A. How many kilometers did B run?