30.567
根据题意,财务净现值的计算过程如下:
财务净现值=-300(/,10%,1)+50(/,10%,2)+100(/,10%,3)+100(/,10%,4)+100(/,10%,5)+100(/,10%,6)=-300x0.909+50x0.826+100x0.751+100x0.683+100x0.621+100x0.564=30.5万元。