Question

Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4
minutes, pipe A is turned off. What is the total time required to fill the tank?
O a. 12 min 30 sec
O b.
14 min 40 sec
O c. 10 min 20 sec
O d. 11 min 45 sec​

Answer 1

Answer:

14 min 40 sec

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