document.write( "Question 789628: Hello. I am having problems with this 1 question. \r
\n" ); document.write( "\n" ); document.write( " How many mL of water should be added to 1 Gallon of 70% isopropyl alcohol to prepare a 30% solution for soaking sponges?\r
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Algebra.Com's Answer #478891 by Alan3354(69443)\"\" \"About 
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How many mL of water should be added to 1 Gallon of 70% isopropyl alcohol to prepare a 30% solution for soaking sponges?
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\n" ); document.write( "1*70 + w*0 = (1+w)*30
\n" ); document.write( "70 = 30 + 30w
\n" ); document.write( "w = 4/3 gallons of water
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