tlng jawab pakai cara

8,5 liter → 100 km
X liter → 350 km

8,5/X=100/350
100×X=8,5×350
100X=2975
X=29,75 liter

Sisa bahan bakar=45 liter - 29,75 liter
=15,25 liter

Jadi, jawabannya b.15,25