document.write( "Question 1200124: If 5 cats catch 5 rats in 5 minutes, how many cats are needed to catch 72 rats in 2 hours? \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Thanks!! \n" ); document.write( "
Algebra.Com's Answer #834165 by ikleyn(52810)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "If 5 cats catch 5 rats in 5 minutes, how many cats are needed to catch 72 rats in 2 hours?
\n" ); document.write( "~~~~~~~~~~~~~~~~~~~~\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\r\n" );
document.write( "If 5 cats catch 5 rats in 5 minutes, then the rate of each single cat is  \r\n" );
document.write( "\r\n" );
document.write( "    \"5_rats%2F%285_cats%2A_5_minutes%29\" = \"5%2F%285%2A5%29\" = \"1%2F5\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "If \"c\" cats catch 72 rats in 2 hours, then the rate of each single cat is\r\n" );
document.write( "\r\n" );
document.write( "    \"72_rats%2F%28c_cats%2A120_minutes%29\" = \"6%2F%28c%2A10%29\" = \"3%2F%28c%2A5%29\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "The rates assume to be the same, so you write this proportion (equation)\r\n" );
document.write( "\r\n" );
document.write( "    \"3%2F%285c%29\" = \"1%2F5\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "It gives you c = \"%28%283%2F5%29%29%2F%28%281%2F5%29%29\" = 3.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "ANSWER.  3 cats.\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "--------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "You can find many other similar solved problems in these lessons\r
\n" ); document.write( "\n" ); document.write( "    - Rate of work problems \r
\n" ); document.write( "\n" ); document.write( "    - Entertainment problems on joint work \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "My point is that if a person learns on how to solve joint work problems
\n" ); document.write( "and does not use a conception of the rate of work,  then this person spends his time for nothing.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );