document.write( "Question 70382: Employees use two methods to refinidh a chair. Method I takes 1 hour and cost $3. Method II takes 1 1/2 hour and cost $1.50. Last week, they took 36 hours and spen t $60. How many did they refinish with each method? \n" ); document.write( "

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Employees use two methods to refinidh a chair. Method I takes 1 hour and cost $3. Method II takes 1 1/2 hour and cost $1.50. Last week, they took 36 hours and spen t $60. How many did they refinish with each method?
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\n" ); document.write( "Let \"x\" be number done with Method I.
\n" ); document.write( "Yet \"y\" be number done with Method II.
\n" ); document.write( "Time equation: 1x + 1.5y = 36
\n" ); document.write( "Cost Equation: 3x + 1.5y = 60
\n" ); document.write( "---------
\n" ); document.write( "Subtract time equation from cost equation to get:
\n" ); document.write( "2x=24
\n" ); document.write( "x=12 (number done with Method I)
\n" ); document.write( "Substitute into time equation to solve for y as follows:
\n" ); document.write( "12 + 1.5y = 36
\n" ); document.write( "1.5y = 24
\n" ); document.write( "y = 16 (number done with Method II)
\n" ); document.write( "-------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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