document.write( "Question 1115151: two mechanics worked ona car the first mechanic charged 115 per hour and the second mechanic charged 65 per hour the mechanics worked for a combined total of 15 hours and together they charged a total of 1475 how long did each mechanic work \n" ); document.write( "
Algebra.Com's Answer #730027 by stanbon(75887)\"\" \"About 
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two mechanics worked on a car. the first mechanic charged 115 per hour and the second mechanic charged 65 per hour the mechanics worked for a combined total of 15 hours and together they charged a total of 1475 how long did each mechanic work
\n" ); document.write( "Time Equation: f + s = 15 hrs
\n" ); document.write( "Cost Equation: 115f+65s = 1475 dollars
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\n" ); document.write( "Modify for elimination:
\n" ); document.write( "115f + 115s = 115*15
\n" ); document.write( "115f + 65s = 1475
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\n" ); document.write( "Subtract and solve for \"s\":
\n" ); document.write( "50s = 250
\n" ); document.write( "second mechanic = 5 hrs
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\n" ); document.write( "Substitute for \"s\" and solve for \"f\"::
\n" ); document.write( "first mechanic = 15-5 = 10 hrs
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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