作业帮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?
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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?
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?
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?
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
6 weeks($1500)=[2 weeks($300×2=$600)+1／3 week($100)+1／3week($100)]×2
大括号里面是$800,是三周时间，所以要$1500就还需要三周时间，虽然三周后应该是$1600,但是他问的是什么时候能得到$1500,所以应该也是在第六周的时候，我是这样想的，楼主看看是不是这样的，如果是希望采纳，谢谢
厄。。。貌似楼上的是...
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6 weeks($1500)=[2 weeks($300×2=$600)+1／3 week($100)+1／3week($100)]×2
大括号里面是$800,是三周时间，所以要$1500就还需要三周时间，虽然三周后应该是$1600,但是他问的是什么时候能得到$1500,所以应该也是在第六周的时候，我是这样想的，楼主看看是不是这样的，如果是希望采纳，谢谢
厄。。。貌似楼上的是对的，呵呵，题目没有理解清楚，不好意思了
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