document.write( "Question 988509: Please help me solve this word problem....\r
\n" ); document.write( "\n" ); document.write( "A forester is making a gasoline-oil mixture for a chainsaw engine. The forester has 3 gallons of a mixture that is 30 parts gasoline and 1 part oil. How many gallons of gasoline should the forester add to bring the mixture to 50 parts gasoline and 1 part oil? \n" ); document.write( "

Algebra.Com's Answer #609062 by MathTherapy(10551) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "Mixture: 3 gallons of 30:1 (gasoline to oil)\r
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\n" ); document.write( "\n" ); document.write( "A forester is making a gasoline-oil mixture for a chainsaw engine. The forester has 3 gallons of a mixture that is 30 parts gasoline and 1 part oil. How many gallons of gasoline should the forester add to bring the mixture to 50 parts gasoline and 1 part oil?
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Let the multiplicative factor be x
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document.write( "Then, 30x + x = 3
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document.write( "31x = 3
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document.write( "Amount of gasoline: , or 
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document.write( "Amount of oil: \r
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document.write( "Let amount of gasoline to add, be G
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document.write( "Then: 
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document.write( "90 + 31G = 150 ---- Cross-multiplying
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document.write( "31G = 150 - 90
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document.write( "31G = 60
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document.write( "G, or gas to add =  gallons \n" );
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