document.write( "Question 1185896: Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $70 per hour. The mechanics worked for a combined total of 20 hours, and together they charged a total of $1375. How long did each mechanic work? \n" ); document.write( "
Algebra.Com's Answer #816756 by josgarithmetic(39630)\"\" \"About 
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first and second mechanics
\n" ); document.write( "x and y, their time each
\n" ); document.write( "or
\n" ); document.write( "h, time for second mechanic @ $70 per hour
\n" ); document.write( "20-h, time for first mechanic @ $65 per hour\r
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\n" ); document.write( "\n" ); document.write( "\"70h%2B65%2820-h%29=1375\"\r
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\n" ); document.write( "\n" ); document.write( "\"70h-65h%2B65%2A20=1375\"\r
\n" ); document.write( "\n" ); document.write( "\"%2870-65%29h=1375-65%2A20\"\r
\n" ); document.write( "\n" ); document.write( "\"h=%281375-%2865%29%2820%29%29%2F%2870-65%29\"--------Simplify, compute this.\r
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\n" ); document.write( "\n" ); document.write( "--\r
\n" ); document.write( "\n" ); document.write( "\"h=%281375-1300%29%2F5\"\r
\n" ); document.write( "\n" ); document.write( "\"h=75%2F5\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28h=15%29\"\r
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\n" ); document.write( "\n" ); document.write( "check: found h reproduce the $1375?
\n" ); document.write( "15 hours at $70/hr
\n" ); document.write( "5 hours at $65/hr
\n" ); document.write( "\"15%2A70%2B5%2A65\"
\n" ); document.write( "\"1375\"\"yes\"
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