Funny math riddles

Q - :

6 cats kill 6 rats in 6 minutes .how many cats will be
needed to kill 100 rats in 50 minutes?

A - :


6 cats----6 rats---6 min
1 cat-----6 rats---36 min
1 cat---1 rat----6 min

1 cat---100rats----600 min
1 cat---100 rats---12*50 min
12 cats---100 rats----50 min.

so ans is 12 cats.

      (OR)



one cat kill one rat in six minutes
so 1 cat kills 100 rat in 6*100=600minutes
then 100 rats to be killed in 50 minutes requires 600/50=12 cats
so the answer is 12