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21)

8 men can finish a piece of work in 40 days. If 2 more men join with them, then the work will be completed in

**[NICL GIC(AO), 2013]**

22)

30 men can do a piece of work in 16 days. How many men would be required to do the same work in 20 days?

23)

15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men?

**[LIC (AAO), 2009]**

24)

9 men working for 7 hours a day can complete a piece of work in 15 days. In how many days can 6 men working for 9 hours a day, complete the same piece of work?

**[RBI (Scale 1), 2008]**

25)

Two men alone or three women alone can complete a piece of work in 4 days. In how many days can one woman and one man together complete the same piece of work?

**[Corporation Bank (PO), 2011]**

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