Boris is ordering supplies for his company. He ordered 20 boxes of pencils and 32 boxes of pens. What is the ratio of boxes of pens ordered to boxes of pencils ordered?

A.
1:20
B.
8:5
C.
5:8
D.
20:1

The ratio of boxes of pens ordered to boxes of pencils ordered is 32:20, which simplifies to 8:5. Therefore, the correct answer is B. 8:5.