document.write( "Question 708075: Cara can pick enough apples to fill a barrel in half an hour. Jim takes 42 minutes to do it. In how many minutes can they pick a barrel full if they do it together? \n" ); document.write( "
Algebra.Com's Answer #435969 by josgarithmetic(39630) ![]() You can put this solution on YOUR website! If they work together, we are assuming their rates are additive.\r \n" ); document.write( "\n" ); document.write( "Cara does 1 barrel in 30 minutes, rate is 1/30. \n" ); document.write( "Jack's work rate is 1/42 barrels per minute.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Working together, their rate is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Using the relation rate*time=jobs, to do ONE job, (fill 1 barrel), we have \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The number of minutes then for both of them doing this one job is \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Just look at the rate and simplify that first: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Refer back a bit to |