document.write( "Question 1177971: If 3 cats catch 6 rats in 9 days, 9 cats can catch 12 rats in how many days? \n" ); document.write( "

Algebra.Com's Answer #807142 by ikleyn(52810) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "Let  d  be \"in how many days . . . \".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Then you have this proportion\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "     = ,    (1)\r\n" );
document.write( "\r\n" );
document.write( "or\r\n" );
document.write( "\r\n" );
document.write( "     = .     (1)\r\n" );
document.write( "\r\n" );
document.write( "     = .\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "The proportion says that the rate   is the same in both cases.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "From proportion  (1),  you have\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    9d =  = 2*27\r\n" );
document.write( "\r\n" );
document.write( "     d =  = 2*3 = 6 days.      AMSWER\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "By doing this way, you will ALWAYS feel the solid ground under your legs and will NEVER make an error.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "----------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "To see many other similar (and different) problems, solved in this way, look into the lesson\r
\n" ); document.write( "\n" ); document.write( " - Rate of work problems \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );