【正确答案】
(1)更新成本=100×120%/105%+10×120%/115%=114.29+10.43=124.72(万元)
加权更新成本=4×114.29+1×10.43=457.16+10.43=467.59(万元)
加权投资年限=467.59/124.72=3.75(年)
(2)成新率=6/(3.75×60%+6)×100%=72.73%
实体性贬值=重置成本×(1-成新率)=124.72×(1-72.73%)=34.01(万元)
(3)功能性贬值=0.1×12×(1-25%)×(P/A,10%,6)=3.92(万元)
(4)经济性贬值率=(1-80%0.7)×100%=14.46%
(5)评估值=重置成本-实体性贬值-功能性贬值-经济性贬值=(124.72-34.01-3.92)×(1-14.46%)=74.24(万元)