An unopened cereal box contains 15/28 cubic foot of cereal. if the box is full and the length and height of the box are 5/7 and 1 1/2 feet respectively what is the width of the box

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Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

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