SOMEONE HELP plzzz. 3.7.1 - Test: Similarity Unit Test Part 1 Geometry B / 3. Similarity / 3.7. Similarity Unit Test

What could explain what happened when the time was equal to 120 minutes

I'm confused on this could anyone me and show me what i need to do to solve it.

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?