g友分享gre数学机经讨论题(11)
<p> 下面是参加了海外<span word="gre">gre</span>数学机经的同学分享的<span word="gre">gre</span>数学机经，希望通过自己的分析和解答能给其他<span word="gre">gre</span>考生提供思路和指导，也可以和周边的<span word="g">g</span>友一起来讨论这些题目，对于<span word="gre">gre</span>数学考试的复习是相当有帮助的。</p><p> 51、问一个公司一年的<span word="revenue">revenue</span>增加了多少~</p><p> <span word="A">A</span>. 一年的<span word="expense">expense</span>增加了25%</p><p> <span word="B">B</span>.一年的<span word="gross">gross</span> <span word="profit">profit</span>减少了6%</p><p> <span word="revenue">revenue</span> = <span word="gross">gross</span> <span word="profit">profit</span> - <span word="expense">expense</span></p><p> 条件1+条件2)</p><p> 设以前<span word="revenue">revenue</span> = <span word="gp">gp</span><span word="ex">ex</span></p><p> 现在为<span word="revenue">revenue</span>= 0.94<span word="gp">gp</span>1.25 <span word="ex">ex</span></p><p> 差值为：-0.06<span word="gp">gp</span>0.25<span word="ex">ex</span> 初值不知，求解不出 选<span word="E">E</span></p><p> 52、问是否<span word="x">x</span>^2<span word="x">x</span></p><p> 0</p>
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