Two pipes A, B can fill a tank in 24 min. and 32 min. respectively. If both the pipes are opened simultaneously, after how much time B should be closed so that the tank is full in 18 min.?
A. 5 min
B. 14 min
C. 8 min
D. 19 min
Answer:C
Two pipes A, B can fill a tank in 24 min. and 32 min. respectively. If both the pipes are opened simultaneously, after how much time B should be closed so that the tank is full in 18 min.?
A. 5 min B. 14 min C. 8 min D. 19 min
Explanation: Let B be closed after x min. then,