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A clothing factory is going to process 400 sets of sportswear. After 160 sets of sportswear are processed, new technology is adopted to improve the work efficiency by 20% compared with the original plan. As a result, it takes 18 days to complete the task. How many sets of sportswear are processed in the original plan?
Suppose that the original plan is to process x sets per day, from the meaning of the question: 160x + 400 − 160 (1 + 20%) x = 18. The solution is: x = 20. It is tested that x = 20 is the solution of the original equation. Answer: the original plan is to process 20 sets per day
A clothing factory is going to process 300 sets of costumes. After processing 60 sets of costumes, new technology is adopted, so that the daily work efficiency is twice of the original. As a result, it takes 9 days to complete the task?
According to the meaning of the question, the result is: 60x + 300 − 602x = 9. (3 points) the solution is: x = 20. According to the test, x = 20 is the root of the original equation. A: the clothing factory originally processes 20 sets of costumes every day. (6 points)
A factory processes a batch of clothes, originally planned to use 40 people, 18 days to complete the task. If everyone's work efficiency is the same, now add 5 people, several days ahead of time
A factory processes a batch of clothes, originally planned to use 40 people, 18 days just to complete the task. If everyone's work efficiency is the same, now add 5 people, how many days before they finish?
Advance: 18-40x18 ÷ (40 + 5) = 2 days
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