Question 1015561
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The store pays $16.20 per bucket of 450 eggs.
The store pays $16.20 per 37.5 dozen eggs.(450 eggs=37.5 dozen)
The store pays ($16.20/37.5 doz)=$0.432/doz
The store charges ($3.50-0.432) $3.068 more per dozen than they paid.
($3.068/$0.432)(100%)=710% 
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ANSWER: The eggs are marked up 710%.
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