Jawabanmu

2014-08-27T20:06:19+07:00
30 x 4 = 120
75 x 4 = 300

120/3 = 40
300/3 = 100

presentasenya 40%
2014-08-27T20:14:31+07:00
30/75 x 100% =30/3x 4% = 10x 4= 40% manik manik