document.write( "Question 1005270: Solution XRD is one half sulfur acid while QXJ is 3/4 sulfur acid. How many liters of solution QXJ should be added to a liter of solution XRD to obtain a solution that is 3/5 sulfur acid? \n" ); document.write( "

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Solution XRD is one half sulfur acid while QXJ is 3/4 sulfur acid. How many liters of solution QXJ should be added to a liter of solution XRD to obtain a solution that is 3/5 sulfur acid?
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Let amount of QXJ solution to add, be q
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document.write( "It's best to change the fractions to decimals. 
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document.write( "In so doing,  becomes: .5;  becomes: .75,  becomes .6, and we get: 
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document.write( ".5(1) + .75(q) = .6(1 + q)
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document.write( ".5 + .75q = .6 + .6q
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document.write( ".75q - .6q = .6 - .5 
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document.write( ".15q = - .1
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document.write( "q, or amount of QXJ solution to add = .1/.15, or  L \n" );
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