document.write( "Question 761753: \"How much water must be added to a bottle of 840 cm^3 of acid which contains 10% of pure acid to obtain a solution of 7% pure acid?\" \n" ); document.write( "
Algebra.Com's Answer #463487 by Alan3354(69443)\"\" \"About 
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\"How much water must be added to a bottle of 840 cm^3 of acid which contains 10% of pure acid to obtain a solution of 7% pure acid?\"
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\n" ); document.write( "840*10 + x*0 = (840+x)*7
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