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Question

Bittu can finish a task by himself in 60 days, while Anoop and Bittu working together can complete the same task in 28 days. If Anoop starts the task alone and works for 35 days before stopping, how many additional days would Bittu need to complete the remaining work on his own?

A 20 days

B 18 days

C 12 days

D 15 days

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