Pipes and cistern (part-1)

Example - 1
दो नल A तथा B एक टंकी को क्रमश: 24 घंंटे अौर 30 घंंटे में भर सकता है यदि दोनों नल को एक साथ खोला जाए तो टंकी को भरने में कितना समय लगेगा
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Example - 2

एक नल एक टंकी को 20 घंटे में भर सकता है टंकी के पेंदी में छेेद से रिसाव के कारण इसे भरने में 25 घंंटे लगते हैंं यदि टंकी पूरी भरी हो तो छेेद के रिसाव से टंकी कितने समय में खाली हो जाएगी

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Example - 3

नल A तथा B टंकी को अकेले क्रमश: 12 और15 घंटे में भरतेे हैंं नल C पूरी भरी टंकी को 18 घंटे में खाली कर सकता हैै यदि तीनों नल एक साथ खुले हों तो टंकी को पूरा भरने में कितना समय लगेगा

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Example - 4

एक नल एक टंकी से पानी 10 लीटर प्रति घंटेे के दर से निकाल सकता हैै 40 लीटर भरे एक टंकी से आधा पानी यह कितनी देर में खाली कर सकता है

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