Question 1145230
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If three cats catch three {{{highlight(cross(rat))}}} <U>rats</U> in three minutes, how many cats will catch 100 rats in 100 {{{highlight(cross(minites))}}} <U>minutes</U> ?
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The rate of work of each cat is  {{{3/(3*3)}}} = {{{1/3}}} of a rat per minute.


Therefore, the number of cats to catch 100 rats in 100 minutes is  {{{100_rats/(100_minutes*(1/3))}}} = 3.


<U>ANSWER</U>.  3 cats.
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