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题库 / OG2021-PS-97
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?
$1,840
$2,070
$2,135
$2,160
$2,430
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