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16)

'A' is thrice as good a workman as 'B' and so takes 60 days less than 'B' for doing a job. The time in which they can do the job together is

**[LIC (AIO), 2012]**

17)

'A' can do a certain job in 12 days. 'B' is 60% more efficient than 'A'. To do the same job 'B' alone would take

18)

'A' takes twice as much as 'B' and thrice as much as 'C' to complete a piece of work. They together complete the work in 1 day. In what time will 'A' alone complete the work?

19)

'X' is 3 times as fast as 'Y' and is able to complete the work in 40 days less than 'Y'. Then, the time in which they can complete the work together, is

20)

16 men and 12 women together can complete a work in 8 days. 20 men can complete the same work in 16 days. How many days will 16 women take to complete the same work?

**[IBPS RRB (Scale 1), 2014]**

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