Maths, percentage?
回答 (1)
2018-11-12 1:50 pm
Sol
設混合bottle B x cm^3
1000*(30/100)+x*(90/100)=300+0.9x
(300+0.9x)/(1000+x)>=50/100
300+0.9x>=500+0.5x
0.4x>=200
x>=500
設混合bottle B x cm^3
1000*(30/100)+x*(90/100)=300+0.9x
(300+0.9x)/(1000+x)>=50/100
300+0.9x>=500+0.5x
0.4x>=200
x>=500
收錄日期: 2021-04-24 01:12:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20181104121628AAbeznY