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Mathematics 16 Online
OpenStudy (anonymous):

Sarah took the advertising department from her company on a round trip to Chicago to meet with a potential client. Including Sarah, a total of 15 people took the trip. She was able to purchase coach tickets for $380 and first-class tickets for $1290. She used her total budget for airfare for the trip, which was $11,160. How many first-class tickets did she buy? How many coach tickets did she buy?

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