设甲银行存逗或入x元,则乙银行存入200000-x元(1-0.2)[0.055x+0.045(200000-x)]=7600x=50000200000-50000=150000(元)即甲银行存了键段5万元,乙银行存了15万稿指誉元
设甲种为x元则 (1-20%)【5.5%x+4.5%(20-x)】=0.76解得x=5