document.write( "Question 181736: Method of Substitution
\n" ); document.write( "10. Charlene makes two types of guilts. For the first type, she charges $25 for material and $50/h for hand quilting. For the second type, she charges $100 for material and $20/h for machine quilting. For what number of hours are tthe costs the same?\r
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Algebra.Com's Answer #136342 by ankor@dixie-net.com(22740)\"\" \"About 
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10. Charlene makes two types of quilts. For the first type, she charges $25 for
\n" ); document.write( " material and $50/h for hand quilting. For the second type, she charges $100 for
\n" ); document.write( " material and $20/h for machine quilting. For what number of hours are the costs the same?
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\n" ); document.write( "Let h = no. of hrs
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\n" ); document.write( "Cost1 = 50h + 25; for quilt 1
\n" ); document.write( "Cost2 = 20h + 100; for quilt 2
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\n" ); document.write( "Cost 1 = Cost 2
\n" ); document.write( "50h + 25 = 20h + 100
\n" ); document.write( "50h - 20h = 100 - 25
\n" ); document.write( "30h = 75
\n" ); document.write( "h = \"75%2F30\"
\n" ); document.write( "h = 2.5 hrs the cost are the same
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\n" ); document.write( "Check this:
\n" ); document.write( "50(2.5) + 25 = 150
\n" ); document.write( "20(2.5) + 100 = 150 \n" ); document.write( "
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