11) The senior classes at High School A and High School B planned separate trips to the indoor climbing gym. The senior class at High School A rented and filled 4 vans and 5 buses with 265 students. High School B rented and filled 12 vans and 14 buses with 754 students. Every van had the same number of students in it as did the buses. Find the number of students in each van and in each bus. 12) Molly and DeShawn are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of holiday wrapping paper. Molly sold 6 rolls of plain wrapping paper and 3 rolls of holiday wrapping paper for a total of $111. DeShawn sold 13 rolls of plain wrapping paper and 9 rolls of holiday wrapping paper for a total of $273. What is the cost each of one roll of plain wrapping paper and one roll of holiday wrapping paper