document.write( "Question 602759: Together, Stanley and Elsie can mow a lawn in 3 hours. It takes elsie 5 hours to mow the lawn alone. How long would it take Stanley working by himself? \n" ); document.write( "
| Algebra.Com's Answer #380397 by stanbon(75887)      You can put this solution on YOUR website! Together, Stanley and Elsie can mow a lawn in 3 hours. It takes elsie 5 hours to mow the lawn alone. How long would it take Stanley working by himself? \n" ); document.write( "----- \n" ); document.write( "Together rate: 1/3 job/hr \n" ); document.write( "Elsie rate: 1/5 job/hr \n" ); document.write( "Stan rate: 1/x job/hr \n" ); document.write( "----- \n" ); document.write( "Equation: \n" ); document.write( "rate + rate = together rate \n" ); document.write( "1/5 + 1/x = 1/3 \n" ); document.write( "--- \n" ); document.write( "Multiply thru by 15x to get: \n" ); document.write( "3x + 15 = 5x \n" ); document.write( "2x = 15 \n" ); document.write( "x = 7.5 hrs. (Stan's time to do the job alone) \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |