Question 77
Twelve men can complete a work in 8 days. Three days after they started the work, it was decided to complete the remaining work in 4 days. How many more men should be employed so that the remaining work can be completed in 4 days?
Solution
Let total work to be done = 96 units
Thus, 12 men complete 12 units of work each day, thus 1 man's efficiency = 1 unit/day
Work done in first 3 days = 36 units
Now, remaining work, i.e. 60 units must be completed in 4 days
=> Number of men required = $$\frac{60}{4}=15$$
Thus, 3 more men are required.
=> Ans - (A)
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