Pipe A can fill a tank in 45 hours and pipe B can empty it in 36 hours. If both the pipes are open then how much time will it take to fill? I WILL MARK BRAINLIEST FOR FIRST PROPER ANSWER!

Pipe A can fill a tank in 45 hours and pipe B can empty it in 36 hours

1.	Pipe A can fill a tank in 45 hours and pipe B can empty it in 36 hours. If both the pipes are open then how much time will it take to fill? I WILL MARK BRAINLIEST FOR FIRST PROPER ANSWER!
Answer» <html><body><p>k cannot be filled when both pipes are <a href="https://interviewquestions.tuteehub.com/tag/open-586655" style="font-weight:bold;" target="_blank" title="Click to know more about OPEN">OPEN</a> at same time because pipe B speed <a href="https://interviewquestions.tuteehub.com/tag/pf-1152667" style="font-weight:bold;" target="_blank" title="Click to know more about PF">PF</a> empting the <a href="https://interviewquestions.tuteehub.com/tag/tank-1239056" style="font-weight:bold;" target="_blank" title="Click to know more about TANK">TANK</a> is faster than pipe A speed of <a href="https://interviewquestions.tuteehub.com/tag/filling-988031" style="font-weight:bold;" target="_blank" title="Click to know more about FILLING">FILLING</a> the tank.</p></body></html>