Ten men or twelve women can finish the same work in 10 days. If 5 men and9 2 women undertake the work together, how many days will they take to complete the work?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 15.
| Understanding/Application |
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Total work = total time × (men + women) 10 men or 12 women can finish the same work in 10 days. 10m(10) = 12w(10) 5m = 6w Let the same work be completed in x days by 5 men and 2 women. |
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Total work done by 5 men and 2 women = (5m + 2w)x 12w(10) = (6w + 2w)x 120w = 8wx x = 15 days |