(2) A pot of water used 1/2 and 5 barrels, leaving 30%. How many buckets of water are there in this water tank?
(3) There is a square wood, the fast side is 20 cm long, and it is planed into a cylinder with the largest diameter at the bottom. What is the volume of wood planed out?
(4) The length of a steel pipe is10m. Cut off 7/ 10 for the first time, and cut off the remaining 1/3 for the second time. How many meters are left?
(5) Assemble radios in two groups. Group A assembles 50 radios every day, and completes 10% of the total task on the first day. At this time, Group B began to assemble 40 radios every day. How many days did it take Group A to complete these tasks?
(6) After the highway is built, the total length is 2/3, and the distance is16.5km.. What is the total length of this highway?
(7) The master and the apprentice made a batch of parts together, and the apprentice made 2/7 of the total, 2 1 less than the master. How many parts are there in this batch?
(8) Two teams build a highway. Team A builds 65438+ 0.5 of the total length every day, and Team B works alone for 7.5 days. If the two teams work together for two days, the rest will be repaired by team B alone. How many days will it take?
(9) There is a batch of chemical fertilizers in the warehouse, and 2/5 of the total amount is taken out for the first time, and 1/3 of the total amount is less than 12 bags for the second time. At this time, there are 24 bags left in the warehouse. How many bags are taken out twice?
(10) In the distance of 720m, the front wheel turns 40 times more than the rear wheel. If the circumference of the rear wheel is 2m, find the circumference of the front wheel.
The number of (1 1) A is 1.2 times the average of three numbers. If the sum of B and C is 99, what is the number of A?
(12) There is a project that plans to use 800 workers, and the construction period is 100 days. I didn't expect to stop work due to an accident 35 days after the start of construction, and continue construction 25 days later. How many more workers will be needed if the work is to be completed within the time limit?
(13) The fruit shop bought several kilograms of apples at the price of 1.5 kilograms of 2 yuan money and sold them at the price of 2.5 kilograms of 4 yuan money. If the store wants to make a profit of 100 yuan, how many kilograms of fruit must this fruit shop sell?
(14) The walking speeds of Party A, Party B and Party C are 30m, 40m and 50m per minute respectively. Party A and Party B are in place A, and Party C is in place B. Both parties walk in opposite directions at the same time. After Party C meets Party B, meet Party A in 10 minutes. How many meters are the two places apart?
(15) It takes 15 minutes for Party A to go from the east village to the west village, and 15 minutes for Party B to go from the west village to the east village. Two people set out at the same time and walked towards each other. When they met, the distance was 150 meters, thus finding the distance between the two villages. & lt/P & lt； p & gt
(16) A car runs 2/5 of the whole course on the first day, and the rest on the second day 1/2. The distance on the third day is less than that on the first day 1/3, and the remaining distance is 50 kilometers. How many kilometers is the journey?
(17) The passenger ship sails from Port A to Port B at a speed of 24 kilometers per hour. It took 12 hours for the cargo ship to sail from port B to port A. At the same time, when they met, the ratio of passenger ships to cargo ships was 6: 7, and the distance between the two ports was 6: 7.
(18) The distance between Station A and bilibili is1134km. A bus and a truck leave from two stations at the same time and meet at 10 hour and 30 minutes. The speed of a truck is seven-fifths that of a bus. How many kilometers does this bus travel per hour?
(19) The number of male employees in an assembly workshop is equivalent to 20% of female employees. It is understood that there are female employees 130 in this workshop. How many male employees are less than female employees?
(20) 25 kg of salt water with a salt content of 20%. After adding some water, the salt content is 8%. How much water did you add?
(2 1) There are 307 tons of grain in warehouses A, B and C. After 40 tons are shipped out, the surplus grain weight ratio of warehouse A and warehouse B is 3: 5, and that of warehouse B and warehouse C is 3: 4. How many tons of raw grain is there in warehouse C?
(22) Workshop A and Workshop B need to process a batch of flour. The ratio of 130% for Workshop A and Workshop B to complete the planned tasks is 8: 5, and Workshop B processes less flour 13.5 tons than Workshop A ... How many tons of flour was originally planned to process?