document.write( "Question 1076574: two mechanics worked on a car, the first mechanic charged 55 dollars per hour and the second mechanic charged 115 dollars per hour. the mechanics worked for a combined total of 20 hours, and together they charged a total of 1400 dollars. how long did each mechanic work? \n" ); document.write( "
Algebra.Com's Answer #691202 by stanbon(75887)\"\" \"About 
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two mechanics worked on a car, the first mechanic charged 55 dollars per hour and the second mechanic charged 115 dollars per hour. the mechanics worked for a combined total of 20 hours, and together they charged a total of 1400 dollars. how long did each mechanic work?
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\n" ); document.write( "Equations:
\n" ); document.write( "m + M = 20 hours
\n" ); document.write( "55m + 115M = 1400 dollars
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\n" ); document.write( "11m + 11M = 220
\n" ); document.write( "11m + 23M = 280
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\n" ); document.write( "Subtract and solve for \"M\":
\n" ); document.write( "12M = 60
\n" ); document.write( "M = 5 hrs (time the $115 per hr worked)
\n" ); document.write( "m = 15 hrs (time the $55 per hr worked)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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