Stephanie and Shawna are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Stephanie sold 10 rolls of plain wrapping paper and 4 rolls of shiny wrapping paper for a total of $90. Shawna sold 5 rolls of plain wrapping paper and 10 rolls of shiny wrapping paper for a total of $125. What is the cost each of one roll of plain wrapping paper and one roll of shiny wrapping paper?