Jawabanmu

2014-09-12T18:54:03+07:00
90ml
karena cat putih 4/9 bagian jadi 40x9/4=90
2014-09-12T18:56:02+07:00
1/3 x + 2/9 x +40 = x
5/9 x + 40 = x
40 = x - 5/9 x
40 = 4/9 x semua dikali 9
360 = 4 x
x = 90