A boat is moored to the dock. On its side there is a ladder with 10 steps visible above the water, separated by 20 cm. The tide rises 15 cm per hour. In 2 hours, how many steps will still be visible above the water?
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The boat and the ladder
It seems like a calculation of centimeters, but the key is not how much the water rises, but rather how it rises with it.
Hints
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- No imagines the ladder fija to the muelle.
- The ladder is unida to the boat.
- If the tide rises, the boat rises with it.
Solution
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Answer: 10 steps will still be visible. Although the tide rises 30 cm in two hours, the boat also rises with the tide. Since the ladder is attached to the ship, it goes up with it. Therefore, the distance between the water and the visible part of the ladder does not change. No additional steps are covered.
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