Mrs. Dickerson bought ice cream treats for 5 children. Each child picked either a sundae or a milkshake. The sundaes cost $2 each and the milkshakes cost $4 each. If Mrs. Dickerson spent a total of $18, how many of each type of treat did she buy?
sundaes


milkshakes

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?