Nazirsaved$900tobuyaplasmaTV.H-查字典问答网
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  Nazirsaved$900tobuyaplasmaTV.Heborrowedtherestataninterestrateof18%acompoundedmonthly.Twoyearslater,hepaid$1429.50fortheprincipalandtheinterest.HowmuchdidtheTVoriginallycost?抱歉忘了说是求怎么求答案,

  Nazirsaved$900tobuyaplasmaTV.Heborrowedtherestataninterestrateof18%acompoundedmonthly.Twoyearslater,hepaid$1429.50fortheprincipalandtheinterest.HowmuchdidtheTVoriginallycost?

  抱歉忘了说是求怎么求答案,不是翻译。书上答案写1900,

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2020-01-2019:14
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冯俊小

  不好意思,翻译出错,其实是年利率18%的月复利,所以这样算

  设电视机成本X元

  (X-900)*(118%/12)的24次方=1429.5

  (X-900)*1.4295=1429.5

  X=1900

2020-01-20 19:18:44
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