Mathematics · Time and Work
नल A एक टंकी को 218 घंटे में भर सकता है जबकि नल B इसे 327 घंटे में खाली कर सकता है। यदि A और B दोनों को एक साथ खोल दिया जाए, तो टंकी कितने घंटों में भर जाएगी?
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