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A completes a task in 8 days. How many days for A to do half the work?

Correct answer: C. 4

  • A. 2
  • B. 3
  • C. 4
  • D. 6

Explanation

The correct answer is 4. Since A completes the entire task in 8 days, A completes 1/8 of the task per day. Therefore, to complete half of the task, A would need 4 days (since 1/8 * 4 = 1/2). Option 2 is incorrect because it only accounts for 1/4 of the work. Option 3 results in 3/8 of the work being done, which is less than half. Option 6 exceeds the halfway mark, completing 3/4 of the task.

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Logical problems present several conditions about people, objects, events or choices and require their possible arrangements to be tested. They cover constraint-based reasoning, rankings, matching, grouping, scheduling and elimination, with attention to the difference between a complete solution and a possibility that merely satisfies one condition.

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