25 men can complete a task in 16 days. Four days after they started working, 5 more men, with equal workmanship, joined them. How many days will be needed by all to complete the remaining task?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 10 days.
| Understanding/Application |
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25 men complete the whole work in 16 days so total work = 25 x 16 = 400 unit Work complete in 4 days = 25 x 4 = 100 unit Remaining work = 400 - 100 = 300 units New joiner = 5 Now total number of men = 25 + 5 = 30 Time taken by 25 man to complete remaining task = Total Remaining Work/Number of mens = 300 units/30 = 10 days |