Q36. Pipe A can fill a tank in 15 hours, while Pipe B can empty it in 20 hours. If both pipes are opened for 5 hours, and then Pipe A alone is used to finish filling the tank, what is the total time taken to fill the tank?Mathematics — Word Problems — Question 36 of 38A. 18.75 hoursB. 15 hoursC. 20 hoursD. 13.75 hoursPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →