A majority of the 25 students in Mr. Jackson's class bought erasers at the school bookstore. Each of these students bought the same number of erasers, and this number was greater than 1. The cost of an eraser in cents was greater than the number of erasers each student bought, and the total cost of all the erasers was $18.85. What was the cost of an eraser in cents?
5
13
19
29
31
