document.write( "Question 846463: How many gallon of plant food that is 9% nitrogen must be combine with another plant food that is 25% nitrogen to make 10 gallons of a solution that is 15% nitrogen? \n" ); document.write( "
Algebra.Com's Answer #509768 by richwmiller(17219)\"\" \"About 
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.09a+.25b=.15*10,
\n" ); document.write( "a+b=10
\n" ); document.write( "a=6.25, b=3.75
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