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A stack of plates 6 5/8 in high. about how high is 4 stacks of the same height

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Let the unknown height be the x. This height is the product of the height of each stack (S) to the number of stacks (n) present.
x = Sn
Substituting the known values,
x = (6 5/8 in)(4) = 26 1/2 in
Thus, the height of 4 stacks is 26.5 inches.
User ToddT
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