GMAT 考满分题库

Magoosh - - 240

The entire contents of a full sack of flour can be used to make 15 cupcakes and 8 pizzas. The same full sack of flour can be used to make 7 cupcakes and 14 pizzas. If a full sack of flour is used to make only pizzas, how many pizzas can be made?
• A$18\frac{1}{4}$
• B$18\frac{1}{2}$
• C$18\frac{3}{4}$
• D18
• E$19\frac{1}{4}$

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