Question

The efficiency ratio of Neha, Karan, and Ishaan is 16:11:14, respectively. Together, they can complete a task in 30 days. Neha and Karan started the task, but after 20 days, Karan was replaced by Ishaan. In how many days was the entire task completed?

A 40 days
B 54 days
C 43 days
D 19 days
E None of these
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