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16)

A and B together can complete a work in 3 days. They started together but after 2 days, B left the work. If the work is completed after 2 more days, B alone could do the work in how many days?

**[SSC 2007]**

17)

90 men are engaged to do a piece of work in 40 days, but it was found that in 25 days, two-third of the work is completed. How many men should be allowed to go off so that the work may be finshed on time?

**[SSC 2008]**

18)

36 work men are employed to finish a certain work in 48 days. But it is found that in 24 days only $\frac{2}{5}$ work is done. How many more men must be taken to finish the work in time.

**[LIC ADO 2007]**

19)

If 12 men or 18 women can do a piece of work in 14 days. How long will 8 men and 16 women take to finish the work?

**[Railways 2007]**

20)

20 men complete one-third of a project in 20 days. How many more men should be employed to finish the rest of project in 25 more days?

** [GBO 2007]**

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