SOLUTION: your family is taking a trip. you begin with 16 gallons of gas in the fuel tank. your car uses 3 gallons of gasoline per hour. you will stop to refuel when there is exactly 1 gallo

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Question 390909: your family is taking a trip. you begin with 16 gallons of gas in the fuel tank. your car uses 3 gallons of gasoline per hour. you will stop to refuel when there is exactly 1 gallon of gasoline left in the tank. After how many hours will you need to stop to refuel
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = number of hours before refueling.
Then 3x + 1 = 16 ==> 3x = 15 ==> x = 5 hours.