Question

188. A cistern can be filled by a pipe in 3 hours
and it can be emptied by a waste pipe in 2
hours. If both pipes are opened when the cistern
is full, how soon will it be emptied?
a) 3 hours b) 4 hours
c) 5 hours d) 6 hours​

Answer 1

Answer:

it will be emptied in 6 hours

Step-by-step explanation:

because all the way of emptying are closed and only one is open so it take more time to empty