Mary wanted to know how many sheets of paper were recycled. There were 20 students in her class and each student recycled 15 sheets of
paper.
Which equation could Mary use to solve her problem?
O A. 20+15 = n
B. 20 x 15 = n
Oc. 15 + 20 =n
D. 20-15 =n
E. 20 = 15 =n