Jawabanmu

2014-09-01T17:45:07+07:00
2 x 60 menit = 120 mnit
120 menit : 20 menit = 6
15 x 2 x 6 = 180 amuba
*maaf kali salah*
2014-09-01T18:05:02+07:00
2 jam =120 menit : 20 = 6 kali =15,30,60,120,240,480,960