document.write( "Question 1054724: It takes Mandy 4 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Kim 5 hours. How long would it take them working together? (Round your answer to two decimal places.) \n" ); document.write( "
Algebra.Com's Answer #669930 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! It takes Mandy 4 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Kim 5 hours. How long would it take them working together? (Round your answer to two decimal places.) \n" ); document.write( "---------- \n" ); document.write( "4*5/(4+5) = 20/9 hours \n" ); document.write( " |