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Question

Rahul can complete a project in 50 days, while Karan can finish the same project in 75 days. Rahul starts working alone, and after 30 days, Karan joins him. How many additional days will Rahul and Karan take together to finish the remaining work?

A 20 days

B 15 days

C 12 days

D 14 days

E None of these

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