Jawabanmu

2014-08-26T22:24:43+07:00
Rumus : t : s/v 
t : 120km/275km = 0.436363636

2014-08-26T22:27:09+07:00
120 km/jam : 120/60 menit
275 km : .... menit ?

120 = 60
275 = x

x = 275 x 60 : 120
x = 137.5 menit
x = 2 jam 17.5 menit