问题
单项选择题
When Greenville State University decided to move its fine arts collection to a new library, it had to package the collection in 20-inch by 20-inch by 15-inch boxes. If the university pays $0.50 for every box, and if the university needs 3.6 million cubic inches to package the collection, what is the minimum amount the university must spend on boxes ？（）
A. $255
B. $275
C. $510
D. $1,250
E. $2,550
答案
参考答案：A
解析：
The boxes mentioned are 20×20×15 cubic inches=6,000 cubic inches each. 3,060,000 divided by 6,000 equals 510 boxes. 510×$0.50 per box=$255.