Firewood is often sold by the cord a cord of wood is a bundle measuring 4 feet by 4 feet by 8 feet. what's the volume of a cord of wood in cubic feet?

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?