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1. If 18 identical machines required 40 days to complete a job, how many fewer days would have been required to do the job if 6 additional machines of the same type had been used from the beginning?
- A. 10
- B. 10
- C. 10
- D. 10
Answer: Option A
Explanation:
18 machines complete a job in 40 days
So, 18 + 6 = 24 machines complete the job in 40 x 18 / 24 = 30 days
Number of days saved = 40 - 30 = 10 days
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