11) If it takes 10 minutes to travel from point A to point B at a constant speed of 30 miles per
hour, how many minutes does it take to travel
the same route from point A to point B at a
constant speed of 20 miles per hour?

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?