There is a boat with a ladder attached to it, the ladder is eight feet tall. If the water rises four feet how much of the ladder will be on top of the water?
Common Wrong Answers
“Four feet”
This guess assumes that the ladder is independent of the boat, but since the ladder is attached to the boat, it rises with the boat as the water level rises.
“Zero feet”
This guess might come from the assumption that rising water would submerge the ladder, but again, the ladder is attached to the boat, which rises with the water.
“Two feet”
This guess could stem from a misunderstanding of how much of the ladder remains above water when only considering the water rise. However, the ladder remains fully above water because it rises with the boat.
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