easy · GMAT Quant
A locomotive consumes 10 gallons of fuel per hour when traveling at or below a speed limit of 40 miles per hour. If the train accelerates above 40 miles per hour, its fuel consumption increases to 18 gallons per hour.
How many gallons of fuel does the locomotive consume during a trip consisting of 3 hours at 35 miles per hour and 2 hours at 50 miles per hour?
- 50 gallons
- 56 gallons
- 66 gallons
- 78 gallons
- 90 gallons
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