chenjialu1988
設(shè)與A1對(duì)應(yīng)的數(shù)據(jù)是B1,與A2對(duì)應(yīng)的數(shù)據(jù)是B2,與A對(duì)應(yīng)的數(shù)據(jù)是B,A介于A1和A2之間,按照(A1-A)/(A1-A2)=(B1-B)/(B1-B2),計(jì)算出A的數(shù)值。59×(1+r)^-1+59×(1+r)^-2+59×(1+r)^-3+59×(1+r)^-4+(59+1250)×(1+r)^-5=1000當(dāng)r=9%時(shí),59×3.8897+1250×0.6499=229.4923+812.375=1041.8673>1000元當(dāng)r=12%時(shí),59×3.6048+1250×0.5674=212.6832+709.25=921.9332<1000元現(xiàn)值利率1041.86739%1000r921.933212%(1041.8673-1000)/(1041.8673-921.9332)=(9%-r)/(9%-12%)r=10%
雯雯闖天涯
這要看題目設(shè)的條件,如果前面年份是每年等額付款,符合年金條件,那折現(xiàn)當(dāng)然可以用年金。符合復(fù)利現(xiàn)值條件,則是用復(fù)利現(xiàn)值來折現(xiàn)。最后一年因?yàn)楸窘鸬氖栈嘏c利息的計(jì)算時(shí)點(diǎn)以及數(shù)量上不等額,當(dāng)然用復(fù)利來折現(xiàn),不能用年金。首先明確確年金與復(fù)利的區(qū)別,這樣你就不會(huì)迷惑了。
妖妖小雯雯
年票面利息=1250*4.72%=59實(shí)際利率i計(jì)算59*(P/A,i,5)+1250*(P/S,i,5)當(dāng)i=10%時(shí),算式=59*3.7908+1250*0.6209=999.78當(dāng)i=9%時(shí),算式=59*3.8897+1250*0.6499=1041.87插枝法:i=9% 1041.87 i 1000i=10% 999.78實(shí)際利率i=9%+(10%-9%)*(1041.87-1000)/(1041.87-999.78)=9.99%你可以查一下復(fù)利現(xiàn)值系數(shù)表和年金現(xiàn)值系數(shù)表
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