document.write( "Question 976205: The Harris family and the Hayes family each used their sprinklers last summer. The water output rate for the Harris family's sprinkler was
\n" ); document.write( "30L
\n" ); document.write( " per hour. The water output rate for the Hayes family's sprinkler was
\n" ); document.write( "35L
\n" ); document.write( " per hour. The families used their sprinklers for a combined total of
\n" ); document.write( "55
\n" ); document.write( "hours, resulting in a total water output of
\n" ); document.write( "1800L
\n" ); document.write( ". How long was each sprinkler used? \n" ); document.write( "
Algebra.Com's Answer #597846 by Boreal(15235)\"\" \"About 
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harris is R hrs
\n" ); document.write( "hayes is S hrs\r
\n" ); document.write( "\n" ); document.write( "R+S=55 hours,
\n" ); document.write( "R=55-S\r
\n" ); document.write( "\n" ); document.write( "(55-S)*30=1650-30S units are hours*liters/hour-hours
\n" ); document.write( "S*35=35S\r
\n" ); document.write( "\n" ); document.write( "Their sum is 1800 L.\r
\n" ); document.write( "\n" ); document.write( "1650-30S+35S=1800
\n" ); document.write( "5S=150
\n" ); document.write( "S=30 hours
\n" ); document.write( "R=25 hours\r
\n" ); document.write( "\n" ); document.write( "30*35=1050 L
\n" ); document.write( "25*30=750 L
\n" ); document.write( "add to 1800 L
\n" ); document.write( " \n" ); document.write( "
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