Mathematics · Pipes and Cisterns
एक नल किसी टंकी को भरने में 10 घंटे का समय लेता है, जबकि दूसरा नल उसी टंकी को खाली करने में 15 घंटे लेता है। यदि दोनों नल एक साथ खोल दिए जाएँ, तो टंकी को भरने में कितना समय लगेगा?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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30 घंटे
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