某人每年年初存入银行三千元,连续八年,若银行按百分之九的利率计年复利,此人第八年年末可从银行提取多

2024年11月20日 08:26
有1个网友回答
网友(1):

a=3000元
第1年年末本息:a*(1+0.09)=a*1.09=3270元
第2年年末本息:(3270+a)*1.09=6834.30元
第3年年末本息:(6834.30+a)*1.09=10719.39元
第4年年末本息:(10719.39+a)*1.09=14954.14元
第5年年末本息:(14954.14+a)*1.09=19570.01元
第6年年末本息:(19570.01+a)*1.09=24601.31元
第7年年末本息:(24601.31+a)*1.09=30085.43元
第8年年末本息:(30085.43+a)*1.09=36063.12元
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或者这样算更准确:a*(1.09的8次方+1.09的7次方+1.09的6次方+1.09的5次方+1.09的4次方+1.09的3次方+1.09的2次方+1.09)=36063.11元
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第8年末本金2.4万元,利息1.2万元多
有哪家银行能以9%年息揽储呢?有的话只能造成富人愈富,穷人愈穷。

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