(1)
NCF0=240
NCF1=260
NCF2=0
NCF3~11=(480-360)*(1-25%)+(500-20)/10*25%=102
NCF12=NCF11+20=102+20=122
(2)投资报酬率
((480-360)*10-500)/500/10=14%
投资回收期=500/102=4.9(年)
(3)NPV=102*(P/A,10%,9)*(P/F,10%,2)+122*(P/F,10%,12)-260*(P/F,10%,1)-240
=102*5.759*0.8264+122*0.3186-260*0.9091-240=47.95
PI=(102*(P/A,10%,9)*(P/F,10%,2)+122*(P/F,10%,12))/(260*(P/F,10%,1)+240)
=(102*5.759*0.8264+122*0.3186)/(260*0.9091+240)=1.1
(4)NPV=102*(P/A,IRR,9)*(P/F,IRR,2)+122*(P/F,IRR,12)-260*(P/F,IRR,1)-240
IRR=15%时,NPV=-10.36
IRR=14%时:NPV=14
插值法求得NPV=0时,IRR=14.57%
这题第四问有问题