Current postal regulations state that no package may be sent if its combined length, width, and height exceed 70 in. What are the possible dimensions of a box to be mailed with equal height and width if the length is three times the height?
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A. The height and width must each be 15 in. or less and the length 42 in. or less.
B. The height and width must each be 15 in. or more and the length 42 in. or more.
C. The height and width must each be 14 in. or less and the length 42 in. or less.
D. The height and width must each be 14 in. or less and the length 56 in. or less.
E. The height and width must each be 14 in. or more and the length 42 in. or more.
Answer: C
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