15%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
800*5%=40(g)
800+400=1200(g)
400*30%=120(g)
(40+120+x)/20%=2000(g)
2000-1200=800(g)
x=240
240/800=30%
15%对吗？
%15?
15%
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024