A college is selling tickets to the annual battle of the bands competition. On the first day of ticket sales, the college sold 3 student

tickets and 5 adult tickets for a total of $70. On the second day, the

college sold 12 student tickets and 12 adults tickets for a total of $216.

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?