Jawapan

2016-06-28T00:23:32+08:00
Peratus Gred C :
100% - 45% - 24% - 6% = 25%
2016-06-30T06:02:35+08:00
100% - 45% = 55% 55% - 24% = 31% 31% - 6% = 25%