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Question

Ajay, Bjay, and Cheetna can individually finish a task in 20, 24, and 30 days, respectively. They began working together, but Ajay left the task 10 days before its completion, and Bijay left 4 days after Ajay's departure., then in how many days were needed to finish the entire task?

A 25 days

B 20 days

C 14 days

D 18 days

E none of these

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