Rungs under water puzzle

Rungs under water puzzle

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. Assume high tide peaks in one hour.

When the tide is at it’s highest, how many rungs are under water?

1 Response

  1. Gagan says:

    None. Height of boats last rung above water level remains same.

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