Last year a school raised $19,950 by selling $15 tickets to a carnival fundraiser. this year the school will raise $20 per ticket. if the school sells the same number of tickets as it did last year, how much money will be raised?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?