http://kaiwu.city/openfiles/Excel_solver1_table_and_chair.xlsx
http://kaiwu.city/openfiles/Excel_solver2_beef_and_potato.xlsx
http://kaiwu.city/openfiles/Excel_solver2food_extend.xlsx
1.sumproduct
http://kaiwu.city/openfiles/sm_sumproduct.xlsx
http://kaiwu.city/openfiles/Excel_solver5_transportation2.xls
2.workshift
http://kaiwu.city/openfiles/Excel_solver3_workshift1opetator.xlsx
http://kaiwu.city/openfiles/Excel_solver3_workshift2policeman.xlsx
http://kaiwu.city/openfiles/Excel_solver3_workshift3crew.xlsx
3.facility optimization
http://kaiwu.city/openfiles/Excel_solver4_ATM_location.xls