Answers

2014-08-22T20:22:50+05:30
We can use unitary method here
10 pipes    -       24 min.
8 pipes(2 out of order)   -     ?(x)
x=24*8/10
x=192/10
x=19.2
therefore, remaining pipes(8 pipes) fill the tank in 19.2 min.

0
Answer is wrong its answer is 30 minutes because less pipes more time
yeah sorry
delete the answer
i will try again and give u the answer