In a package of mixed nuts, Marty found the following: There were twice as many Brazil nuts as cashews; There were twice as many peanuts as Brazil nuts; 1 There were the same number of almonds as Brazil nuts. Altogether, there were 81 nuts in the tin. How many of each type of nut were there?

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?