we know that
1 cup=0.25 quarts
therefore
convert 15 cups to quarts
15 cups=15*0.25=3.75 quarts
so
3.75 quarts=3 quarts +0.75 quarts
Convert 0.75 quarts to cups
0.75 quarts=0/75/0.25=3 cups
the answer is
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