set product := WM, WB, PM; 
set resource := steel, molding, assembly, wrench_demd, plier_demd;

param profit :=
WM 	130
WB 	10
PM	100 ;

param usage: 
		WM	PM	WB :=
steel		1.5	1	0
molding		1	1	0
assembly 	0.3	0.5	0
wrench_demd 	1	0	1
plier_demd	0	1	0 ;

param avail := 
steel 		27 
molding 	21 
assembly 	9
wrench_demd	15
plier_demd	9 ;