document.write( "Question 692315: Bill can mow a lawn in 1 1/2 hours with a riding lawn mower. Joe can mow it in 2 1/2 hours with a push mower. How long should it take to do the job if they work together? (HINT: Rates add. Rate(Bill) + Rate(Joe) = Rate(together) and rate is amount mowed divided by time taken.) \n" ); document.write( "
Algebra.Com's Answer #426967 by unlockmath(1688)![]() ![]() You can put this solution on YOUR website! Hello, \n" ); document.write( "We can use the following equation: \n" ); document.write( "x/1.5 + x/2.5 = 1 \n" ); document.write( "Multiply by 15 to get: \n" ); document.write( "10x + 6x = 15 \n" ); document.write( "Combine and divide by 16: \n" ); document.write( "x= 15/16 of an hour. \n" ); document.write( "Make sense? \n" ); document.write( "RJ \n" ); document.write( "www.math-unlock.com \n" ); document.write( " |