document.write( "Question 1137052: A professor can grade three tests in the time it takes a student assistant to grade one test. Working together, they can grade the tests for a class in 2 hours.How long would it take the student assistant working alone? \n" ); document.write( "
Algebra.Com's Answer #754890 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "**************************************************************************** \n" ); document.write( "-------------- \n" ); document.write( "-------------- \n" ); document.write( "--------------\r \n" ); document.write( "\n" ); document.write( "r, rate of student assistant \n" ); document.write( "3r, rate of professor \n" ); document.write( "The quantity of tests to grade is 1 job. \n" ); document.write( "- \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |