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A car travelled from London at a speed of 40mph. Its fuel consumption was 30 mpg. It had a 5 gallon tank which was full when it started, but at that very moment began to leak fuel. After 60 miles the car stopped with a completely empty tank. How many gallons per hour was it losing? [Ref: ZCLB] © Express Newspapers [Author: Kevin Stone]
2 gallons per hour. The car travelled 60 miles before stopping, this means it used 2 gallons. The car took 1.5 hours to travel 60 miles. Therefore the car lost 3 gallons in 1.5 hours = 2 gallons per hour.
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