Mathematics · Work and Time
एक पाइप एक टंकी को 2 घंटे में भरता है। हालाँकि, एक रिसाव (लीक) के कारण इसे भरने में 30 मिनट का अतिरिक्त समय लगा। पूरी तरह से भरी हुई टंकी को खाली करने में अकेले उस रिसाव को कितना समय लगेगा?
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