Question

Two pipe a and b can fill a tank in 8 minutes and 10 minutes respectively both pipes open on alternate li if v is first started in how much time the system the field

Answer 1

Answer:

P alone can fill in the next 8- minutes.

Step-by-step explanation:

In 1- minute both pipes P and Q can fill= 1/24 + 1/27= (9 +8)= 17/216 .

So 17/216 x T+ 8 x (1/24)= 1

So T=( 2/3)÷ (17/216)= 8.47 minutes. So after 8.47- minutes, pipe Q (B) should be closed so that pipe -P alone can fill in the next 8- minutes.