tolong yaa plase.. .....

s = 48 km .
t = 1 jam 12 menit = 1 12/60 = 1 1/5 = 6 / 5 jam .

v = s : t
= 48 : 6/5 jam
= 48 × 5/6 jam .
= 40 km/jam ( A )

semoga membantu .....