Bantuin aku dong kakak Pake cara

S1 (ketapang – rambu) = 30 km
t1 = 2 jam
s2 (rambu – kalibaru) = 45 km

v1 = v2
s1 / t1 = s2 / t2
30 / 2 = 45 / t2
15 = 45 / t2
t2 = 3 jam

Jwbnnya C
Maaf kalau salah