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A tap can fill an empty tank in 48 minutes whereas another tap can empty the full tank in 2 hours. If both the taps are opened at `11:40` a.m., when will the empty tank be filled ?A. `12:40` p.m.B. `1:30` p.m.C. `1:00` p.m.D. `1:20` p.m. |
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Answer» Correct Answer - C Consider, the filling of tank as a positive work and emptying the tank as negative work. |
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