Q35. A tank can be filled by one pipe in 6 hours and by another pipe in 10 hours. If a leak can empty the full tank in 15 hours, how long will it take to fill the tank when both pipes are open and the leak is active?Mathematics — Ratio And Proportion — Question 35 of 75A. 30/7 hoursB. 5 hoursC. 12 hoursD. 15/4 hoursPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →