Mathematics · Time and Work
नल A एक टंकी को 30 मिनट में खाली कर सकता है। नल B इसे 15 मिनट में खाली कर सकता है। यदि दोनों नल एक साथ चलाए जाते हैं, तो टंकी को खाली करने में कितना समय लगेगा?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 130 मिनट
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- 320 मिनट
- 440 मिनट
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10 मिनट
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