document.write( "Question 930859: Sean wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice that is 30% lemon juice and 70% lime juice to make 7 gallons of the 50% lemon/50% lime juice mixture? I got an answer of 1gallon but my teacher said it was 2gallons.
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Algebra.Com's Answer #565336 by ankor@dixie-net.com(22740)\"\" \"About 
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Sean wants to make a mixture that is 50% lemon juice and 50% lime juice.
\n" ); document.write( " How much 100% lemon juice should he add to a juice that is 30% lemon juice and 70% lime juice to make 7 gallons of the 50% lemon/50% lime juice mixture?
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\n" ); document.write( "Write an equation based on the amt of lemon
\n" ); document.write( "let x = amt of pure lemon
\n" ); document.write( "x + .3(7-x) = .5(7)
\n" ); document.write( "x + 2.1 - .3x = 3.5
\n" ); document.write( "x - .3x = 3.5 - 2.1
\n" ); document.write( ".7x = 1.4
\n" ); document.write( "x = 1.4/.7
\n" ); document.write( "x = 2 gallons \n" ); document.write( "
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