1)

A tank when full can be emptied by an outlet pipe A in 5.6 hours, while an inlet pipe B can fill the same empty tank in 7 hours. If pipes A and B are turned on alternatively for 1 hour each starting with pipe A when the tank is full, how long will it take to empty the tank?

SSC CGL Mains 2024

A)

56 hours

B)

55 hours

C)

47 hours

D)

48 hours