十万火急的数学题!!半小时内答!!

2025-02-22 23:12:11
推荐回答(5个)
回答1:

15%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

回答2:

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%

回答3:

15%对吗?

回答4:

%15?

回答5:

15%