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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

    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?
    英語人氣:828 ℃時間:2019-10-23 07:18:42
    優(yōu)質(zhì)解答
    題意應(yīng)該是這樣的:約翰每周周薪是$300,如果兩周中的一周他能剩下1/3,其余的時間剩下1/2,那么幾周后他能儲存下$1500?
    解一:
    所以就應(yīng)是他每兩周存下300×1/3+300×1/2=250的錢,1500÷250=6個兩周,所以應(yīng)是6×2=12周
    解二:
    1500÷(300×1/3+300×1/2)×2=12周
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