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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. 15
- C. 15
- D. 15
Answer: Option B
Explanation:
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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.
Answer: Option B
Explanation:
Post your comments here: