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 used

Algebra ->  Human-and-algebraic-language -> 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 used      Log On


   

Question 39701: 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 the month
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
In september they use x gallons.
In novemeber they use 2x gallons.
In october they use x+12 gallons.
EQUATION:
(x)+(x+12)+(2x)=132
4x=120
x=30
30+12=42
30(2)=60
Hence, they use 30 gallons in september, 60 gallons in november, and 42 gallons in october.
Paul.