ryan and bill are selling cookie dough for a fund raiser. customers can buy packages of sugar cookies and packages of double chocolate cookie dough . ryan sold 9 packages of sugar cookies Dough and two packages of double chocolate cookie dough for a total of $79. Bill sold 3 packages of sugar cookie dough and 10 packages of double chocolate cookie dough for a total of $101. Find the cost of a package of sugar cookie dough and double chocolate cookie dough.