Montel can't keep up with the demand for the lastest best-selling book. He had to order more copies twice this week. On monday he placed an order for 96 books. On wendesday he ordered 264 more . All the books arrived on Friday. There were 24 books in each box. How many boxes of books did Montel receive?
A. 4 boxes
B.11 boxes
C.15 boxes
D.19 boxes
Please help me 30 points