The fish tanks at the Grant Pet Store each hold the same amount of water. Rose used 9 3/5 pitchers of water to fill 6 tanks. How many pitchers of water did she pour into each tank?

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?