Multiple choice general knowledge science & technology

A boat has a ladder that has six rungs; each rung is one foot apart. The bottom rung is one foot from the water. The tide rises at 12 inches every 15 minutes. High tide peaks in one hour. When the tide is at its highest, how many rungs are under water?

  1. 6

  2. 4

  3. three

  4. 0
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When the tide rises, the boat and its attached ladder rise along with the water. Therefore, the relative distance between the water and the rungs remains constant, and no rungs go underwater.

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