A reservoir has two pipes, A and B. A can fill the reservoir 5 hours faster than B. If both together fill the reservoir in 6 hours, the reservoir will be filled by A alone in-
A. 8 hours
B. 10 hours
C. 11 hours
D. 12 hours
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সঠিক উত্তরঃ
B.
10 hours
Explanation:
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