# SOLUTION: The Randolphs used 12 more gal of fuel oil in October than in September and twice as much oil in November as in September. If they used 132 gal for the 3 months, how much was use

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 Click here to see ALL problems on Travel Word Problems Question 42427: The Randolphs used 12 more gal of fuel oil in October than in September and twice as much oil in November as in September. If they used 132 gal for the 3 months, how much was used during each month?Answer by Socom491(19)   (Show Source): You can put this solution on YOUR website!Ok to solve this, we first have to set up our variables. Let n= The amount of oil used in September Let n+12= Amount of Oil used in October Let 2n= Amount of oil used in November So now we have to add everything up and have it total 132 gallons of gas, because that's how much they used. n+n+12+2n= 132 Now we combine like terms, and solve for n. 4n+12=132 -12=-12 ----------- 4n=120 /4= /4 n=30 Ok so we now know that n=30, now we can plug thirty for n and figure out how much oil they used for each month. 20= September 32= October 40= November