A cistern can be filled by one tap in 4 hrs. and another tap in 6 hrs. How long will it take to fill the cistern if both taps are opened together? Please help me solve this question and solve the question and send me how to do it. Share with your friends Share 0 MD Shahid Khan answered this Dear Student, Regards 0 View Full Answer Vansh Kumar answered this Pls upvote me cheers -1 Shaiba Imran answered this Answer 1