1.A project can be finished in15 days if 36 workers areemplayed.If project must be finished in 5days earlier,how many workers are requiled?
2.If we subtract the product of 5 and x form the result of dividing 25 by 75, the result is 27. Find x.
Equations
2007-02-17 11:10 pm
回答 (2)
2007-02-18 12:02 am
✔ 最佳答案
Q.1(15 x 36) worker-hours / (15 - 5) days
= 540 / 10
= 54 workers
Q.2
25/75 - 5X = 27
1/3 - 5X = 27
5X = 1/3 - 27
= -80/3
X = -16/3
2007-02-17 16:04:24 補充：
樓上仁兄的答案有問題。Ｑ１第一個答案對，第二個答案列式對但計算出錯。Ｑ２列式錯誤。[Dividing 25 by 75]是 25/75，不是 75/25。
2007-02-18 5:22 am
Question 1
The man-day of the project is : 15 day x 36 workers= 540 day-workers
To finish the project within 5 days, the number of workers required = 540 day-worker/5 = 108 workers.
Question 2
The answer for question 2 given by the other member is correct.
The man-day of the project is : 15 day x 36 workers= 540 day-workers
To finish the project within 5 days, the number of workers required = 540 day-worker/5 = 108 workers.
Question 2
The answer for question 2 given by the other member is correct.
收錄日期: 2021-04-12 18:41:03
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