Jitesh and Kamal can complete a certain piece of work in 7 and 11 days, respectively, They started to work together, and after 3 days, Kamal left. In how many days will Jitesh complete the remaining work?
A161/79
B161/77
C164/78
D162/77
A161/79
B161/77
C164/78
D162/77
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A pump can fill a tank with water in 1 hour. Because of a leak, it took hours to fill the tank. In how many hours can the leak alone drain all the water of the tank when it is full?