Question

Pipes A and B can fill an empty tank i 40 minutes and 60 minutes, respectively and pipe Calone con empty full tank in x mimes. All the three pipes are opened for 24 minutes and then C closed. A and B together fill the tank in another 16 minutes What is the value of x?​

Answer 1

Answer:

Let the tank capacity x ltrs.

Water filled by A in one hr is x/10 ltr

Water filled by B is x/ 12 ltr

Water drain by C is x/ 24 ltrs

Now suppose y hrs is required to fill it

Then x.y/10 + x.y/12 — x.y/24 =x

Solving the equation we get 17 y = 120

Y= 120/17 hrs or 7 hrs 3 minutes and 30 Sec approx.