Nazir saved $900 to buy a plasma TV.He borrowed the rest at
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Nazir saved $900 to buy a plasma TV.He borrowed the rest at an interest rate of 18% a compounded monthly.Two years later,he paid $1429.50 for the principal and the interest.How much did the TV originally cost?
抱歉忘了说是求怎么求答案,不是翻译。书上答案写1900,
抱歉忘了说是求怎么求答案,不是翻译。书上答案写1900,
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)*(1 18%/12)的24次方=1429.5
(X-900)*1.4295=1429.5
X=1900
设电视机成本X元
(X-900)*(1 18%/12)的24次方=1429.5
(X-900)*1.4295=1429.5
X=1900
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