Mike and Pranav are selling fruit for a school fundraiser. Customers can buy small boxes of tangerines and larger boxes of tangerines. Mike Sold 3 small boxes of tangerines and 7 large boxes of tangerines for a total of $97. Pranav sold 12 small boxes of tangerines and 5 large boxes of tangerines for a total of $158. Find the cost of one small box of tangerines and one large box of tangerines.