You have a total of 42 math and science problems for homework you have 10 more math problems and science problems how many problems do you have in each subject use a system of linear equations to justify your answer

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?

Can someone explain to me how to do

50 points~ ! i have to turn this in tomarrow