1 . One worker can do a job in n hours, while it takes a second worker m hours to do the same job. How long does it take both workers?
- A. (m + n)/mn
- B. mn/(m + n)
- C. m + n
- D. 1/m + 1/n
View Answer | Discuss in Forum | Workspace | Report |
1 . One worker can do a job in n hours, while it takes a second worker m hours to do the same job. How long does it take both workers?
View Answer | Discuss in Forum | Workspace | Report |