Multiple choice

A ship anchored in a port has a ladder which hangs over the side. The length of the ladder is 200 cm, the distance between each rung is 20 cm and the bottom rung touches the water. The tide rises at a rate of 10cm an hour. When will the water reach the fifth rung?

  1. 8 hours

  2. 6 hours

  3. 4 hours

  4. 2 hrs

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The tide raises both the water and the boat. So, the water will never reach the fifth rung.

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