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The gas tank in car holds 12 gal of gasoline aaverages 29 migal Royston filled up the and then drove 140 mi About how many gallons are left tank?

The car can travel 12 gal * 29 miles/gal = 348 miles. Since Royston drove 140 miles, the car traveled 348 miles - 140 miles = 208 miles. This means that Royston used 208 miles / 29 miles/gal = 7.17 gallons of gasoline. So there are about 12 gal - 7.17 gal = 4.83 gallons left in the tank.