Johe receive $300 every week as a salary.If one week out of two weeks he keeps one third of it and the rest of the time
问题描述：
Johe receive $300 every week as a salary.If one week out of two weeks he keeps one third of it and the rest of the time he keeps one half of it,how many weeks well it take to save a total of $1500?
答
题意应该是这样的：约翰每周周薪是$300,如果两周中的一周他能剩下1/3,其余的时间剩下1/2,那么几周后他能储存下$1500?
解一:
所以就应是他每两周存下300×1/3+300×1/2=250的钱,1500÷250=6个两周,所以应是6×2=12周
解二:
1500÷(300×1/3+300×1/2)×2=12周