GMAT 考满分题库

Magoosh - 数学PS - 115
When 12 marbles are added to a rectangular aquarium, the water in the aquarium rises$$ 1\frac{1}{2}$$ inches. In total, how many marbles must be added to the aquarium to raise the water $$ 2\frac{3}{4}$$ inches?
  • A16
  • B18
  • C20
  • D22
  • E24
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正确答案: D

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