<PRE><B>Question 1145230</B>
 Three cats catch three rats in three minutes
1/3 as many cats catch 1/3 as many rats in the same time, so
1 cat catch 1 rat in 3 min
100 cats catch 100 rats in 3 min
It will take 3 times as many cats to catch 100 rats in 1/3 that time, so
300 cats catch 100 rats in 1 min
In 100 min, it only takes 300/100 cats to catch 100 rats, so
3 cats catch 100 rats in 100 min

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