document.write( "Question 1034848:  The Moore family and the Bennett family each used their sprinklers last summer. The water output rate for the Moore family's sprinkler was 
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document.write( "35L
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document.write( " per hour. The water output rate for the Bennett family's sprinkler was 
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document.write( "30L
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document.write( " per hour. The families used their sprinklers for a combined total of 
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document.write( "50
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document.write( " hours, resulting in a total water output of 
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document.write( "1650L
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document.write( ". How long was each sprinkler used? \n" );
document.write( "
| Algebra.Com's Answer #649503 by fractalier(6550)     You can put this solution on YOUR website! Call the times used by each, m and b. Then we can write \n" ); document.write( "b + m = 50 and \n" ); document.write( "30b + 35m = 1650 \n" ); document.write( "Now multiply the top one by 30 and subtract from the bottom one...we get\r \n" ); document.write( "\n" ); document.write( "30b + 35m = 1650 \n" ); document.write( "-(30b + 30m = 1500) \n" ); document.write( "--------------------- \n" ); document.write( "5m = 150 \n" ); document.write( "m = 30 hours for Moore so that \n" ); document.write( "b = 20 hours for Bennett \n" ); document.write( " |