Question
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Answer (Detailed Solution Below)
Option 1 : $18$ hours / $18$ घंटे
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Detailed Solution
सही उत्तर $18$ hours / $18$ घंटे है।
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prepsnap.in • Part -AQuestion:
A tap fills a water tank in $6$ hours, while a leak empties the full tank in $9$ hours. If both are open, in how many hours will the empty tank be filled? / एक नल पानी की टंकी को $6$ घंटे में भरता है, जबकि एक रिसाव भरी टंकी को $9$ घंटे में खाली करता है। यदि दोनों खुले हों, तो खाली टंकी कितने घंटे में भरेगी?
1.
$18$ hours / $18$ घंटे
2.
$15$ hours / $15$ घंटे
3.
$12$ hours / $12$ घंटे
4.
$20$ hours / $20$ घंटे
Correct Answer: $18$ hours / $18$ घंटे
Net rate $= \frac{1}{6} - \frac{1}{9} = \frac{1}{18}$ per hour, so $18$ hours. / शुद्ध दर $= \frac{1}{6} - \frac{1}{9} = \frac{1}{18}$ प्रति घंटा, अतः $18$ घंटे।
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