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  • 英語翻譯

    英語翻譯
    A developer has land that has x feet of lake frontage.The land is to be subdivided into lots,each of which is to have either 80 feet or 100 feet of lake frontage.If 1/9 of the lots are to have 80 feet of frontage each and the remain 40 lots are to have 100 feet of frontage each,what is the value of
    (A)400 (B)3200 (C)3700 (D)4400 (E)4760
    英語人氣:269 ℃時間:2019-12-24 09:15:02
    優(yōu)質(zhì)解答
    一個發(fā)展商有一塊臨河的土地長X feet.這塊土地要被分割成小塊,每一小塊長80 或100 feet.如果1/9的小塊土地長80,剩余的40小塊土地長100,問X為多少.
    假設一共分成n塊土地,(1-1/9)n=40,so n=45,80*5+100*40=4400.
    D
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