document.write( "Question 709509: A chainsaw runs on fuel that is 10% oil and 90% gas. How much oil will have to be added to 3 gallons of fuel that is 5% oil and 95% gas in order to use it in the chainsaw? \n" ); document.write( "
Algebra.Com's Answer #436609 by stanbon(75887)\"\" \"About 
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A chainsaw runs on fuel that is 10% oil and 90% gas. How much oil will have to be added to 3 gallons of fuel that is 5% oil and 95% gas in order to use it in the chainsaw?
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\n" ); document.write( "Equation:
\n" ); document.write( "oil + oil = oil
\n" ); document.write( "0.05*3 + 1*x = 0.10(3+x)
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\n" ); document.write( "5*3 + 100x = 10*3 + 10x
\n" ); document.write( "90x = 5*3
\n" ); document.write( "x = 1/6 gallon (amt. of pure oil needed for the mixture)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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