Lisa and Shreya are selling cookie dough for a school fundraiser. Customers can buy packages of chocolate chip cookie dough and packages of double chocolate cookie dough. Lisa sold 12 packages of chocolate chip cookie dough and 8 packages of double chocolate cookie dough for a total of $204. Shreya sold 3 packages of chocolate chip cookie dough and 7 packages of double chocolate cookie dough for a total of $111. What is the cost each of one package of chocolate chip cookie dough and one package of double chocolate cookie dough?