B) John and Ndiba are selling cheesecakes for a school fundraiser. Customers can buy French silk cheesecakes and chocolate marble cheesecakes. John sold 3 French silk cheesecakes and 12 chocolate marble cheesecakes for a total of $252. Ndiba sold 9 French silk cheesecakes and 4 chocolate marble cheesecakes for a total of $148. Find the cost each of one French silk cheesecake and one chocolate marble cheesecake.