1)

A is thrice as good a workman as B and therefore is able to finish a job in 30 days less than B. How many days will they take to finishthe job working together?

**[Railways 2007]**

2)

Susmitha completes $\frac{1}{25}$^{th} a task in 1 day. In how many days will she complete the task?

3)

Ravi completes $\frac{1}{5}$^{th} an assignment in 1 day. Calculate his efficiency percentage?

4)

Rita can complete a job in 40 days. In how many days will she complete 3 such jobs?

5)

16 men can do a piece of work in 10 days. How many men are needed to completed the work in 8 days?

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