Which diagram models √25 = 5? (it won't let me post the photo, so if anyone knows how to with this because they know what question i'm talking about, i'd greatly appreciate 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?