American dollars and British pounds: Assume that at the current exchange rate, the British poundis worth $2.06 in American dollars. You have some dollar bills and several British pound coins. There...

American dollars and British pounds: Assume that at the current exchange rate, the British poundis worth $2.06 in American dollars. You have some dollar bills and several British pound coins. There are 17 items altogether, which have a total value of $30.78 in American dollars. How many American dollars and how many British pound coins do you have?