Choose an answer

A.100 cats
B.20 cats
C.1 cat
D.5 cats
Answer: 5 cats

If 5 cats take 5 minutes for 5 mice, then 1 cat takes 5 minutes for 1 mouse. In 100 minutes, that 1 cat can catch 20 mice. To catch 100, you need 5 cats.

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