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Mathematics, 30.07.2019 14:30 dp845095
Atank can be filled using pipes a, b or both. it takes pipe a, running alone 18 hours to feel the tank. it takes both pipes running together 9.9 hours to fill the tank. how long does it take pipe b, running alone, to fill the tank?
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Atank can be filled using pipes a, b or both. it takes pipe a, running alone 18 hours to feel the ta...
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