Question

12. Two pipes M and N can fill a pool in
40 minutes and 60 minutes respectively.
The entire pool can completely be emptied
by another pipe Pin 30 minutes. M, N and
P are opened alternatively and each is kept
open for just 1 minute. In how much time
will the pool be filled?
(a) 120 min
(b) 14 min
(c) 24 min
(d) 30 min
13. A pipe can fill a tank in x hours and another​

Answer 1

Answer:

hey bro your answer is here

Step-by-step explanation:

First we will minus the 40 and 60

40-60=20

Then afterwards minus (20 and 30)minutes

20+300=120