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When John was six years old he hammered a nail into his favorite tree to mark his height.
Ten years later at age sixteen, John returned to see how much higher the nail was.
If the tree grew by five centimeters each year, how much higher would the nail be?
If the tree grew by five centimeters each year, then over the ten-year period, the tree would have grown by:
5 cm/year x 10 years = 50 cm
Therefore, the nail would be 50 cm higher than where John had hammered it in at age six.
Assuming the nail was hammered into the trunk of the tree and not on the top of the tree. In this case, the tree’s growth in height would not affect the height of the nail on the trunk.
Therefore, the nail would still be at the same height as where John had hammered it in at age six, regardless of the tree’s growth in height.