document.write( "Question 1118974: An experienced teaching assistant can grade all exams for a calculus class 3 hours faster than a new teaching assistant. Working together, the teaching assistants can grade all the exams for the calculus class in 5 hours. How long would it take for the new teaching assistant to grade all of the exams for the calculus class alone? \n" ); document.write( "
Algebra.Com's Answer #734399 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
x, time for new assistant to grade the papers if working alone\r
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\n" ); document.write( "\n" ); document.write( "\"1%2F%28x-3%29%2B1%2Fx=1%2F5\"\r
\n" ); document.write( "\n" ); document.write( "--\r
\n" ); document.write( "\n" ); document.write( "\"5x%2B5x-15=x%5E2-3x\"\r
\n" ); document.write( "\n" ); document.write( "\"10x-15=x%5E2-3x\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-13x%2B15=0\"\r
\n" ); document.write( "\n" ); document.write( "\"general_quadratic_formula_solution\"
\n" ); document.write( "\"x=%2813%2Bsqrt%28109%29%29%2F2\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x=11.72\"
\n" ); document.write( "11 hours 43 minutes\r
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\n" ); document.write( "\n" ); document.write( "check:-----------
\n" ); document.write( "\"1%2F8.72%2B1%2F11.72=1%2F5\"
\n" ); document.write( "\"0.1147%2B0.0853\"
\n" ); document.write( "\"0.2\", \"yes\"
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