After three years, Elsie’s car had lost 1/3 of its original value. Two years later, it had lost an additional 1/4 of its original value. If she bought the car for 3,600 dollars, what was the price it was worth after 5 years?

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?