Mathematics · Time and Work
एक टंकी को एक नल द्वारा 6 घंटे में भरा जा सकता है और एक निकास पाइप द्वारा 7.5 घंटे में खाली किया जा सकता है। यदि नल और पाइप दोनों को एक साथ खोल दिया जाए, तो टंकी को पूरी तरह भरने में कितना समय (घंटों में) लगेगा?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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