document.write( "Question 898757: a landscaping company needs 220 gallons of 23% fertilizer to fertilize the shrubs in an office park they have in stock a 30% fertilizer and 20% fertilizer how much of each type should they mix together? \n" ); document.write( "
Algebra.Com's Answer #545044 by richwmiller(17219)\"\" \"About 
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a+b=220,
\n" ); document.write( "0.3*a+0.2*b=0.23*220
\n" ); document.write( "a=220-b
\n" ); document.write( "0.3*(220-b)+0.2*b=50.6
\n" ); document.write( "66-0.3b+0.2*b=50.6
\n" ); document.write( "-0.1*b=-15.4
\n" ); document.write( "b=154
\n" ); document.write( "a=220-b
\n" ); document.write( "a=66 b=154
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