If seven cats kill seven rats in 7 minutes, how many would be needed to kill one hundred rats in 50 minutes?
Answers
Seven cats kill seven rats in seven minutes which means 1 cat will kill 1 rat in one minute.
Cats required to kill 100 rats = 100 cats
Cats required to kill 100 rats in 50 minutes = 100 × 2cats
= 200 cats
Answer:
The correct answer is 14 cats
Explanation:
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As We know:
To kill 7 rats, it takes: 7 cats = 7 minutes
We have to find:
How many cats would be needed to kill one hundred rats in 50 minutes?
So,
To kill 7 rats, it would take 1 cat:
7 × 7 = 49 mins
To kill 1 rat, it takes 1 cat, that is:
49/7 = 7 mins
Since:
We want to kill 100 rats, it would take 1 cat, that is:
7 × 100 = 700 mins
So:
In order to do the job in 50 mins, we would therefore need:
700/50 = 14 cats
Therefore, it would take 14 cats 50 minutes to kill 100 rats.
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