document.write( "Question 262209: Jeff and Diana are working on Math homework. Jeff can comlete 4 math problems in 11 minutes. Diana can complete 7 math problems in 25 minutes. Who is faster?
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document.write( "11/4=25/7
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document.write( "2.75=3.57
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document.write( "Jeff is faster.
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document.write( "Is this right \n" );
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Algebra.Com's Answer #193154 by Theo(13342)![]() ![]() You can put this solution on YOUR website! jeff completes 4 in 11 minutes \n" ); document.write( "dana completes 7 in 25 minutes.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jeff takes 11/4 = 2.75 minutes to complete 1 problem.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "dana takes 25/7 = 3.57 minutes to complete 1 problem.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jeff is faster.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you are correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "another way of looking at is rate * time = units produced.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "with jeff, you get r * 11 = 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "with dana, you get 4 * 25 = 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jeff's rate is 4/11 = .36 problems per minute.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "dana's rate is 7/25 = .28 problems per minute.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jeff's rate per minute is higher than dana's.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jeff is faster.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |