SOLUTION: Your lawn mower requires an oil and gas mixture to make it run correctly. The mixture requires 3 times as much gas as oil. Gas costs $1.43 and oil costs $.85 a gallon. How many ful

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Question 392626: Your lawn mower requires an oil and gas mixture to make it run correctly. The mixture requires 3 times as much gas as oil. Gas costs $1.43 and oil costs $.85 a gallon. How many full gallons of the mixture can be made for $20? This should be just a one variable equation... I have tried 1.43y + (1/3)(.85)y <=20 and I am not getting the correct answer?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Your lawn mower requires an oil and gas mixture to make it run correctly.
The mixture requires 3 times as much gas as oil.
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g = 3o
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Gas costs $1.43 and oil costs $.85 a gallon.
Value: 1.43g + 0.85o <= 20
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How many full gallons of the mixture can be made for $20?
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Substitute for "g" and solve for "o":
1.43(3o) + 0.85o <= 20
5.14o <= 20
o <= 3.89 gallons of oil
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solve for "g"
(g/3) <= 3.89
g <= 11.67 gallons of gas
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Cheers,
Stan H.
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