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Question

Arjun, Binny, and Chiku can collaborate to finish a particular task in 12 days. Additionally, Arjun and Binny working together can complete the task in 15 days. Given that Binny is 50% more effeicient than Chiku, how many days will it take for Arjun to complete the task on their own?

A 11 days

B 12 days

C 24 days

D 45 days

E none of these

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