设有A、B俩个投资项目，其现金流量如下表所示

1.甲：回收期=2+(150-35-52)/65=2.97
乙：回收期=2+(150-45-48)/60=2.95

2.甲：平均投资报酬率=(35+52+65+70+70)/5/150=292/5/150=0.389
乙：平均投资报酬率=(45+48+60+65+70)/5/150=288/5/150=0.384

3.甲：净现值=-150+35*(P/F,12%,1)+52*(P/F,12%,2)+65*(P/F,12%,3)+70*(P/F,12%,4)+70*(P/F,12%,5)
=-150+35*0.8929+52*0.7972+65*0.7118+70*0.6355+70*0.5674
=-150+31.2515+41.4544+46.267+44.485+39.718=53.1759

乙：净现值=-150+45*(P/F,12%,1)+48*(P/F,12%,2)+60*(P/F,12%,3)+65*(P/F,12%,4)+70*(P/F,12%,5)
=-150+45*0.8929+48*0.7972+60*0.7118+65*0.6355+70*0.5674
=-150+40.1805+38.2656+42.708+41.3075+39.718=52.1796

4.甲：净现值=0=-150+35*(P/F,X,1)+52*(P/F,X,2)+65*(P/F,X,3)+70*(P/F,X,4)+70*(P/F,X,5)
当X=24%时 净现值=-150+28.2275+33.8208+34.0925+29.61+23.877=-0.3722
当X=20%时 净现值=-150+29.1655+36.1088+37.6155+33.761+28.133=14.7838
(24%-20%)/(-0.3722-14.7838)=(X%-20%)/( 0-14.7838) X=23.9%

乙：净现值=0=-150+35*(P/F,X,1)+52*(P/F,X,2)+65*(P/F,X,3)+70*(P/F,X,4)+70*(P/F,X,5)
当X=24%时 净现值=-150+36.2925+31.2192+31.47+27.495+23.877=0.3537
当X=28%时 净现值=-150+35.1585+29.2992+28.608+24.2125+20.37=-12.3518
(28%-24%)/(-12.3518-0.3537)=(X%-24%)/( 0-0.3537) X=24.11%

2.甲：现值指数=35*(P/F,12%,1)+52*(P/F,12%,2)+65*(P/F,12%,3)+70*(P/F,12%,4)+70*(P/F,12%,5)/150=1.35
乙：现值指数=45*(P/F,12%,1)+48*(P/F,12%,2)+60*(P/F,12%,3)+65*(P/F,12%,4)+70*(P/F,12%,5)/150=1.35

讲清楚

那个好就用那个