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It takes 20 hours for the master to work alone, 30 hours for the apprentice to work alone, and how many hours for the two to work together? When completing the task, the master made 96 more parts than the apprentice. How many parts are there in total?
1 ／ (120 + 130) = 1 ／ 560 = 1 × 605 = 12 (hours); 96 ／ 12 ／ (120 − 130) = 8 ／ 160 = 8 × 60 = 480 (pieces); answer: it takes 12 hours for two people to cooperate, and there are more than 480 parts in this batch
It takes 10 hours for a master to finish a batch of parts, and 15 hours for an apprentice to finish a batch of parts. The master processes 30 more parts per hour than the apprentice. How many parts are there?
A: there are 900 parts in this batch
It takes 37 hours for the master and the apprentice to process a batch of parts. The apprentice can process 30 parts per hour. Now the master and the apprentice process them at the same time. When they finish the task, the number of parts processed by the apprentice is 59 times that of the master?
A: there are 1998 parts in this batch
RELATED INFORMATIONS
- 1. It takes 37 hours for the master and the apprentice to process a batch of parts. The apprentice can process 30 parts per hour. Now the master and the apprentice process them at the same time. When they finish the task, the number of parts processed by the apprentice is 59 times that of the master?
- 2. It takes 15 hours for the master and the apprentice to process a batch of parts. The apprentice processes 30 parts per hour and completes the task at the same time. The number of parts processed by the apprentice is 5 / 9 of the master's
- 3. The master and the apprentice process a batch of parts. The number of parts processed by the master is 25 more than the total number of 12. The number of parts processed by the apprentice is 13 times that of the master. How many parts are there in total?
- 4. The master and the apprentice worked together to make a batch of parts. The apprentice made a total of 27 parts, 21 less than the master. How many parts are there in this batch?
- 5. A manuscript should be typed in half an hour for Party A and in one third an hour for Party B. the efficiency of Party A is the same as that of Party B
- 6. To make a batch of parts, it takes 12 hours for Party A to complete it alone. Given that the work efficiency ratio of Party A and Party B is 4:3, how long does it take for Party B to complete it alone? (answer in proportion)
- 7. It takes 15 hours for Party A to produce a batch of parts by itself, while the work efficiency of Party B is 50% higher than that of Party A. Party B can complete the work in a few hours by itself and cooperate with each other in a few hours
- 8. One half of a batch of parts can be finished in 18 days according to the plan. If the efficiency is improved by 1 / 8 after 3 days, the batch of parts can be finished How many days does it take for 1 / 3 of the total
- 9. If you make a batch of parts, you can finish one third of it in 18 days. If you work for 4 days, your work efficiency will be improved by one fifth How many days will it take to complete half of this batch of parts? The sixth grade method is easy to understand
- 10. Manufacturing a batch of parts, according to the plan 18 days to complete its 12, if the work efficiency is improved after 3 days, then how many days will it take to complete this batch of parts in total?
- 11. The master and the apprentice worked together to make a batch of parts. The apprentice made a total of 27 parts, 21 less than the master. How many parts are there in this batch?
- 12. How many parts are produced by apprentices in each batch? (the total number of apprentices in each batch is 8 hours.)
- 13. The master and the apprentice processed a batch of parts. The apprentice finished 40% of the total, and the master processed 240 parts. How many parts are there in total? (solution of a series of equations)
- 14. The master and the apprentice process a batch of parts. The apprentice completes 40% of the total. The master processes 80 more parts than the apprentice. How many masters?
- 15. The master and the apprentice process the same number of machine parts at the same time. When the master completes 50%, the apprentice takes 102 unfinished parts: when the master completes the task, the apprentice will finish the task The ratio of the number of parts processed by master and apprentice is 5:4?
- 16. The master and the apprentice process the same amount of the same machine parts at the same time. When the master processes half of the parts, there are 102 apprentices left. When the master finishes, the master will finish The ratio is 5:4! (explain with formula)
- 17. On Inequality: find y = (√ x square + 2x + 2) + (√ x square - 4x + 8)_ Minimum value of
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- 19. 1, 2 and 3 are the three internal angles of a triangle, 1 = 30 degrees, 2 = 40 degrees, 3 = () degrees. This is the () triangle 1 = 40 degrees 2 = 50 degrees 3 = () degrees this is a () triangle 1 = 50 degrees 2 = 60 degrees 3 = () degrees this is a () triangle 1 = 80 degrees 2 = 60 degrees 3 = () degrees this is a () triangle Get it right, there's a prize
- 20. At least one angle in the triangle is greater than or equal to: 45 degrees, 55 degrees, 60 degrees, 65 degrees?