Abby and Andrew are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Abby sold 6 rolls of plain wrapping paper and 4 rolls of shiny wrapping paper for a total of $104.00. Abby sold 8 rolls of plain wrapping paper and 12 rolls of shiny wrapping paper for a total of $232.00. Find the cost of the shiny wrapping paper.