9 men can complete half of a work in 12 days. In how many days 24 men will finish the same work?
- AOption (a)
9 day
- BOption (b)
18 day
- COption (c)
27 day
- DOption (d)
36 day
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Correct answer
9 day
Why this answer is correct
Given:
9 men can complete half of a work in 12 days.
Concept used:
Total work = Efficiency of each worker × Number of days to finish × Number of total workers
Calculation:
Let the efficiency of each man be M.
Half of the total work = 9M × 12 = 108 units
Total work = 108M × 2 = 216M units
Now, 24 men will finish the work in = 216M ÷ 24M
⇒ 9 days
∴ 24 men will finish the work in 9 days.




