Multiple choice

The following questions are accompanied by three statements (A), (B) and (C). You have to determine which statements(s) is/are sufficient necessary to answer the questions. 15 men and 20 women work together for 5 days and then men and 8 women leave the group. In how many days will the remaining work be finished by the remaining people ? (A) 10 men and 15 women together can complete the work in 17 days (B) The work done by 1 man is equal to the work done by 2 women. (C) 20 men alone can do the entire work in 15 days.

  1. Any one of them

  2. Either A or C

  3. Only B

  4. Any two of them

  5. All A, B and C together are required
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Any two statements provide sufficient information. A gives work rate of a combined group. B gives relative efficiency of men and women. C gives work rate of men alone. Any pair allows determining individual rates, then calculating time for remaining work.

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