Jawabanmu

2014-01-27T18:57:23+07:00
25persen=25/100
0.4=40/100
25+40/100
65/100=13/20=0,65

2014-01-27T19:16:22+07:00
25 % + 0,4 = 25/100 + 40/100 = 65/100 = 13/20