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Meg started her trip with 11 1/2 gallons of gas in her car's gas tank. She bought an additional 6 4/5 gallons on her trip and arrived back home with 3 3/10 gallons left. How much gas did she use on the trip?

Respuesta :

15 because you add 11 1/2 plus 6 4/5 which equals 18 3/10 then subtract 3 3/10 which is 15
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Answer:

15

Step-by-step explanation:

This is an algebraic problem.

The amount at start is [tex]11\frac{1}{2}[/tex] gallons

Then bought additional gasoline: [tex]+ 6\frac{4}{5}[/tex]

The remainder after the trip = [tex]3\frac{3}{10}[/tex]

Then the amount of gas used is given by x.

This gives an equation: [tex]11\frac{1}{2} + 6\frac{4}{5} - x = 3\frac{3}{10}[/tex]

solving for x gives 15

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