1 . A man works twice as fast as any of his helpers. if he does a jobs in 90 hours how many hours are required for 6 helpers to do this jobs.
- A. 15
- B. 30
- C. 45
- D. 10
View Answer | Discuss in Forum | Workspace | Report |
1 . A man works twice as fast as any of his helpers. if he does a jobs in 90 hours how many hours are required for 6 helpers to do this jobs.
View Answer | Discuss in Forum | Workspace | Report |