1,进价50*(1+20%)=60元 ,定价60*(1+15%)=69元
2,560/(1+40%)=400元
a:b=0.4:0.22=0.4*11/4:0.22*11/4=1.1:1.21/2
b:c=11:4=11/4*0.22:1/3*0.22=1.21/2:0.22/3
a:b:c=1.1:1.21/2:0.22/3=6.6:3.63:0.44
a:b=15:4=15*3:4*3=45:12
c:b = 5:12
a:b:c=45:12:5
1,进价50*(1+20%)=60元 ,定价60*(1+15%)=69元
2,560/(1+40%)=400元
a:b=0.4:0.22=0.4*11/4:0.22*11/4=1.1:1.21/2
b:c=11:4=11/4*0.22:1/3*0.22=1.21/2:0.22/3
a:b:c=1.1:1.21/2:0.22/3=6.6:3.63:0.44
a:b=15:4=15*3:4*3=45:12
c:b = 5:12
a:b:c=45:12:5