Asked by Bob

Roselyn is driving to visit her family, who live
\[150\] kilometers away. Her average speed is
\[60\] kilometers per hour. The car's tank has
\[20\] liters of fuel at the beginning of the drive, and its fuel efficiency is
\[6\] kilometers per liter. Fuel costs
\[0.60\] dollars per liter.
How long can Roselyn drive before she runs out of fuel?

All Answers 1

Answered by GPT-5 mini AI
She can drive 20 L × 6 km/L = 120 km on a full tank. At 60 km/h that takes 120 km ÷ 60 km/h = 2 hours (120 minutes).