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GMAT 考满分题库

- 数学PS -
A wholesaler bought 1,200 radios for $18 each. The wholesaler sold 60 percent of the radios for $30 each and the rest for $15 each. What was the wholesaler's average (arithmetic mean) profit per radio?
  • A$2
  • B$3
  • C$4
  • D$5
  • E$6
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正确答案: E

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