题库搜索>问题求解PS-13288
Alex deposited x dollars into a new account that earned 8 percent annual interest, compounded annually. One year later Alex deposited an additional x dollars into the account. If there were no other transactions and if the account contained w dollars at the end of two years, which of the following expresses x in terms of w ?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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第一年结束本息时为：x（1+0.08），由于第二年再存入x，第二年本金为：x（1+0.08）+x；
因此，第二年结束时本息为：[x（1+0.08）+x](1+0.08)=w;
解方程：1.08x+x=w/1.08
x(1.08+1)=w/1.08
x=w/1.08(1.08+1)
x=w/[(1.08)^2+1.08],选D
追梦的猪猪
变 2.08 了，没法做对了。。。
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2022-01-19 22:10:52
386776ndxg
化简不对还真找不到答案，无语...
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2021-12-02 16:38:16
别骂了别骂了再骂就把人骂傻了
这道题怎么显示不出来？？
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2020-06-14 15:17:08
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