document.write( "Question 551492: The height of a box is 10 inches. The length is three inches more than the width. Find the width if the volume is 540 cu inches \r
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Algebra.Com's Answer #359748 by TutorDelphia(193)\"\" \"About 
You can put this solution on YOUR website!
Start with the formula
\n" ); document.write( "v=l*w*h
\n" ); document.write( "Write the info given in the problem
\n" ); document.write( "l=w+3
\n" ); document.write( "540=10*l*w
\n" ); document.write( "sub in w+3 for l
\n" ); document.write( "540=10(w+3)*w
\n" ); document.write( "Solve for w
\n" ); document.write( "540=10w(w+3)
\n" ); document.write( "540=10w^2+30w
\n" ); document.write( "0=10w^2+30w-540
\n" ); document.write( "0=10(w^2+3w-54)
\n" ); document.write( "0=10(w+9)(w-6)
\n" ); document.write( "w=-9 or 6
\n" ); document.write( "6 is the only reasonable answer
\n" ); document.write( "And to check 10*9*6=540
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