John and Mary were each paid x dollars in advance to do a certain job together. John worked on the job for 10 hours and Mary worked 2 hours less than John. If Mary gave John y dollars of her payment so that they would have received the same hourly wage, what was the dollar amount, in terms of y, that John was paid in advance? A 4y B 5y C 6y D 8y E 9y 答案是9Y 想請問 題目的意思是要 用 Y表示 John 原本的薪水對吧 ?
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发表于 2010-3-16 13:31:30
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