GMAT 考满分题库

- 数学PS -
A dance troupe has a total of 50 dancers split into 2 groups. The costumes worn by Group A cost $80 each, and those worn by Group B cost $90 each. If the total cost of all the costumes is $4,270, what is the total cost of the costumes worn by Group B?
  • A$1,840
  • B$2,070
  • C$2,135
  • D$2,160
  • E$2,430
正确答案: E

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