Jawabanmu

2014-08-06T19:48:53+07:00
2 jam=120mnt+1/2 jam (30 mnt)=150mnt
1/3X60=20 mnt
2014-08-06T19:49:31+07:00
2 1/2 jam= 150 mnt      1/3 jam= 20 mnt