<p>
甲方案综合资金成本率<br>
={(300/500)×[2.5/10(1-4%)+5%]}+{(200/500)×[6%(1-33%)/(1-0.1%)]}<br>
=10.81%+1.61%=12.42%(3分)<br>
乙方案综合资金成本<br>
={(400/500)×[8%(1-33%)/(1-3%)]}+{(100/500)×[5%(1-33%)/(1-0.1%)]}<br>
=4.42%+0.67%=5.09%(3分)<br>
应该选择乙方案。</p>