What would be the overall miles per gallon the car would report for the total driving done?
HUSSAIN H asked:
The wife of an engineering professor filled up her car’s gas tank, reset the fuel economy calculator to zero, and then drove the hybrid electric car 82 miles. During her trips, she obtained 37.2 miles per gallon performance out of the car. The professor drove the car an additional 8 miles, averaging 51 miles per gallon during his trips. What would be the overall miles per gallon their car would report for the total driving done since they reset the fuel economy calculator?
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The wife of an engineering professor filled up her car’s gas tank, reset the fuel economy calculator to zero, and then drove the hybrid electric car 82 miles. During her trips, she obtained 37.2 miles per gallon performance out of the car. The professor drove the car an additional 8 miles, averaging 51 miles per gallon during his trips. What would be the overall miles per gallon their car would report for the total driving done since they reset the fuel economy calculator?
October 2nd, 2009 at 12:39 am
They went 82 + 8 miles = 90 miles
They used 82/37.2 + 8/51 gallons = 2.361 gallons
90 miles / 2.361 gallons = 38.1 mpg Steve A