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52/3 ÷ 13/4 = 17/3 ÷ 7/4

= 17/3 x 4/7

= 68/21

= 35/21

So she can make 3 spice racks.

Note: in the real world, when cutting lumber, there is loss to sawdust (of the width of the saw) so unless the requirements allow for loss of lumber to sawdust, if she had exactly 4 x 13/4 feet = 7 feet of lumber, she could still only make 3 spice racks.

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13y ago

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