Aptitude:: Time and Work

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Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.

How many workers are required for completing the construction work in 10 days?

I. 20% of the work can be completed by 8 workers in 8 days.

II. 20 workers can complete the work in 16 days.

III. One-eighth of the work can be completed by 8 workers in 5 days.

A. I only
B. II and III only
C III only
D. I and III only
E. Any one of the three

In how many days can 10 women finish a work?

I. 10 men can complete the work in 6 days.

II. 10 men and 10 women together can complete the work in 3 3 days 7

III. If 10 men work for 3 days and thereafter 10 women replace them, the remaining work in completed in 4 days.

A. Any two of the three
B. I and II only
C II and III only
D. I and III only
E. None of these