A mountain lodge employs a cleaner who finishes one floor in 2 hours. On weekends, guest traffic increases, doubling cleaning time. How long to clean 3 floors on Saturday?
Correct answer: A. 12
- A. 12
- B. 6
- C. 9
- D. 10
Explanation
The cleaner usually takes 2 hours per floor, but on weekends, this time doubles to 4 hours per floor due to increased guest traffic. Therefore, cleaning 3 floors takes 3 floors x 4 hours/floor = 12 hours. Option A correctly calculates this. Option B incorrectly assumes standard cleaning time, Option C miscalculates the weekend time, and Option D applies an incorrect adjustment to the doubled time.
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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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