Question
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Answer (Detailed Solution Below)
Option 2 : 3 hours 20 minutes
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Detailed Solution
सही उत्तर 3 hours 20 minutes है।
Key Points
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prepsnap.in • Part -AQuestion:
Pipe A can fill a tank in 6 hours and pipe B can fill it in 8 hours. Both pipes are opened together, but after 2 hours pipe A is closed. How long will pipe B take to fill the remaining part of the tank?
1.
3 hours
2.
3 hours 20 minutes
3.
4 hours
4.
2 hours 40 minutes
Correct Answer: 3 hours 20 minutes
In 2 hours both fill 2 x (1/6 + 1/8) = 7/12 of the tank. Remaining = 5/12, so B alone takes (5/12) x 8 = 10/3 hours = 3 hours 20 minutes. / 2 घंटे में दोनों टंकी का 2 x (1/6 + 1/8) = 7/12 भाग भरते हैं। शेष = 5/12; अकेले B को (5/12) x 8 = 10/3 घंटे = 3 घंटे 20 मिनट लगेंगे।
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