document.write( "Question 913026: find how many mililitres of 3% acid solution and 7% acid solution should be mixed to yield 120 ml of 5% acid solution \n" ); document.write( "

Algebra.Com's Answer #554251 by richard1234(7193) $\"\"$ $\"About$

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Intuitively, if we mix equal amounts of the 3% and 7% solution, we should obtain a 5% solution (e.g. if we have 100 mL of the 3% and 100 mL of the 7%, we will have 200 mL, of which 10 mL is acid, 5%).\r
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\n" ); document.write( "\n" ); document.write( "Hence we must have 60 mL of 3% solution and 60 mL of 7% solution. \n" ); document.write( "

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