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A woodcutter can chop a tree in 3 hours. He works for 1.5 hours, then switches to a duller axe reducing speed by 50%. Total time now?

Correct answer: C. 5

  • A. 4
  • B. 4.5
  • C. 5
  • D. 5.5

Explanation

The woodcutter completes half of the work in 1.5 hours. The remaining half requires double the time due to the 50% reduction in speed, necessitating an additional 3 hours. This results in a total of 5 hours. Options A and B underestimate the effect of the reduced speed, while option D overestimates the time needed by miscalculating the remaining work.

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About Logical Problems

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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