Mr's rodman's class sold candy bars for $1.25 each and mr's powell's class sold water bottles for $0.75 each to raise for the math department. together, they sold 92 items and made $87.50 for the math department. answer all three questions a. write and solve a system of equations that models the problem. show any work that is required. b. which class earned more money? hence how much more money did they earn? c. which class sold more items