标题: 这道购物的题该如何理解题意呢? [打印本页] 作者: Carrie2009 时间: 2010-6-7 12:03 标题: 这道购物的题该如何理解题意呢? During a sale at an office supply store, for every box of paper clips purchased for 15 cents, a second box can be purchased for 4 cents. How many boxes of paper clips did Paul buy if he spent 91 cents on boxes of paper clips?