A tanker can fill a cistern in 12 hours. After half the cistern is filled, 2 more similar tankers are opened. What is the time taken to fill the remaining half of the tank?

A tanker can fill a cistern in 12 hours. After half the cistern is fil

1.	A tanker can fill a cistern in 12 hours. After half the cistern is filled, 2 more similar tankers are opened. What is the time taken to fill the remaining half of the tank?
A.	3 h
B.	1 h 30 min
C.	2 h
D.	1 h 45 min
Answer» D. 1 h 45 min

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A tanker can fill a cistern in 12 hours. After half the cistern is filled, 2 more similar tankers are opened. What is the time taken to fill the remaining half of the tank?

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