A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What isthe total time taken to fill the cistern completely ?

A tube can fill a cistern in 18hrs.After half the cistern is filled, t

1.	A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What isthe total time taken to fill the cistern completely ?
A.	9hrs 52min
B.	10hrs 15 min
C.	9hrs 45 min
D.	10hrs 30min
Answer» E.

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A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What isthe total time taken to fill the cistern completely ?

A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What isthe total time taken to fill the cistern completely ?

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