Distance between towns

Two towns are connected by railway. Can you find the distance between them?

I. The speed of the mail train is 12 km/hr more than that of an express train.

II. A mail train takes 40 minutes less than an express train to cover the distance.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

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Avg age of employees

Average age of employees working in a department is 30 years. In the next year, ten workers will retire. 
What will be the average age in the next year?

I. Retirement age is 60 years.

II. There are 50 employees in the department.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

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Profit percentage Quant puzzle

By selling an article what is the profit percent gained?

I. 5% discount is given on list price.

II. If discount is not given, 20% profit is gained.

III.The cost price of the articles is Rs. 5000.

A. Only I and II              B. Only II and III
C. Only I and III              D. All I, II and III
E. None of these

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8 men&14 women

8 men and 14 women are working together in a field. After working for 3 days, 5 men and 8 women leave the work. How many more days will be required to complete the work?

I. 19 men and 12 women together can complete the work in 18 days.

II. 16 men can complete two-third of the work in 16 days.

III. In 1 day, the work done by three men in equal to the work done by four women.

A. I only
B. II only
C. III only
D. I or II or III
E. II or III only

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Candles&Machines Quant Puzzle

How long will Machine Y, working alone, take to produce x candles?

I. Machine X produces x candles in 5 minutes.
II.Machine X and Machine Y working at the same time produce x candles in 2 minutes.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

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At what time train will reach-Data Sufficiency

At what time will the train reach city X from city Y?

I. The train crosses another train of equal length of 200 metres and running in opposite directions in 15 seconds.
II. The train leaves city Y and 7.15 a.m. for city X situated at a distance of 558 km.
III. The 200 metres long train crosses a signal pole in 10 seconds.

A.  I only
B.  II only
C.  III only
D.  II and III only
E.  All I, II and III are required.

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Time&Work Data Sufficiency

A and B together can complete a task in 7 days. B alone can do it in 20 days. What part of the work was carried out by A?

I. A completed the job alone after A and B worked together for 5 days.
II. Part of the work done by A could have been done by B and C together in 6 days.

A.  I alone sufficient while II alone not sufficient to answer
B.  II alone sufficient while I alone not sufficient to answer
C.  Either I or II alone sufficient to answer
D.  Both I and II are not sufficient to answer
E.  Both I and II are necessary to answer.

Watch this space for answer in a week.