Jawabanmu

2014-06-05T19:43:27+07:00
36 km/h = 10 m/s ; 27 km//h = 7,5 m/s
1 jam 30 menit = 5400 s

s = v₁ × t₁
   = 10 × 5400
   = 54000 m

t₂ =  \frac{s}{v2}
   =  \frac{54000}{7,5}
   = 7200 s
   = 2 jam