Jawabanmu

2014-08-29T21:22:19+07:00
V = S / t
V = 30 km / 2,5
V = 12 km/jam
2014-08-29T21:43:54+07:00
V = s/t
V = 30 km/2 jam 5 menit
V = 30 km/(25/12 jam)
V = 14,4 km/jam