If 5 cats can catch 5 rats in 5 minutes …
… how many cats do you need to catch 100 rats in 100 minutes?
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Hint
How many rats can one cat catch in 5 minutes?
Answer
5.
5 cats can catch 5 rats in 5 minutes.
So
1 cat can catch 1 rat in 5 minutes.
1 cat can catch 2 rats in 10 minutes.
1 cat can catch 20 rats in 100 minutes.
Therefore
5 cats can catch 100 rats in 100 minutes.
