GMAT考试1-GMAT数学12月总结(四)
<p> 62. <span word="Mary">Mary</span> 和 <span word="Tom">Tom</span> 同时从<span word="a">a</span>地出发到<span word="b">b</span>地，问<span word="Mary">Mary</span> 比 <span word="Tom">Tom</span>早到几分钟?</p><p> <span word="A">A</span>. <span word="a">a</span>地到<span word="b">b</span>地距离100<span word="miles">miles</span>.</p><p> <span word="B">B</span>. <span word="Mary">Mary</span>的小时速度 比 <span word="Tom">Tom</span>小时速度快5 <span word="miles">miles</span>.</p><p> 64. <span word="Is">Is</span> <span word="xyz">xyz</span>0</p><p> <span word="A">A</span>. <span word="XY">XY</span>0</p><p> <span word="B">B</span>. <span word="YZ">YZ</span>0</p><p> 65. <span word="A">A</span> <span word="B">B</span> , <span word="C">C</span>在<span word="AB">AB</span>上，<span word="C">C</span>的横坐标是-5，求纵坐标?</p><p> 66.<span word="People">People</span> <span word="in">in</span> <span word="Senior">Senior</span> <span word="only">only</span> <span word="is">is</span> 16, <span word="ppl">ppl</span> <span word="in">in</span> <span word="physics">physics</span> <span word="only">only</span> <span word="is">is</span> 24. <span word="ppl">ppl</span> <span word="in">in</span> <span word="senior">senior</span> <span word="only">only</span> + <span word="ppl">ppl</span> <span word="both">both</span> <span word="in">in</span> <span word="senior">senior</span> <span word="and">and</span> <span word="physics">physics</span> = <span word="ppl">ppl</span> <span word="in">in</span> <span word="physics">physics</span> <span word="only">only</span>. <span word="Whats">Whats</span> <span word="the">the</span> <span word="percentage">percentage</span> <span word="does">does</span> <span word="ppl">ppl</span> <span word="both">both</span> <span word="in">in</span> <span word="senior">senior</span> <span word="and">and</span> <span word="physics">physics</span> <span word="account">account</span> <span word="for">for</span> <span word="all">all</span> <span word="senior">senior</span> ?</p><p> 67. 一个三角形<span word="x">x</span>,<span word="y">y</span>,<span word="z">z</span>，分别为三个外角，确定<span word="x">x</span>的度数?</p><p> <span word="A">A</span>. <span word="x">x</span>=<span word="y">y</span></p><p> <span word="B">B</span>. <span word="x">x</span>=<span word="z">z</span></p><p> 68. <span word="DS">DS</span> 根据账户里的钱付费用问题，$400 之内付1。5%，超出部分付1.2%, 求某人上月账户里有多少钱? </p><p> 69. 溶液问题：10单位混合物，含有30%的<span word="A">A</span>，70%的<span word="B">B</span>，问要取去多少单位的混合物，换成<span word="A">A</span>，使新的混合物中<span word="A">A</span>、<span word="B">B</span>各占50%?</p><p> 20/7</p><p> 设要取去<span word="X">X</span>单位的混合物，解方程<span word="X">X</span>70%=10可得。</p><p> 70. 集合题：参加股东会的人中62%为股东，47%为公司员工，问参加会议的是股东中不是员工的比例?</p><p> 53%</p><p> 62%-=53%</p><p> 71. 假如<span word="X">X</span>、<span word="Y">Y</span>均为正整数，且10</p><p> <span word="a">a</span>. 4，<span word="b">b</span>. 5，<span word="c">c</span>. 6，<span word="d">d</span>. 7，<span word="e">e</span>. 8</p>
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