Math, asked by paultapak6833, 10 months ago

Pipe A can fill an empty cistern in 15 hours while Pipe B takes 25 hours to fill it. Initially only Pipe A is opened for some time and then closed and Pipe B is switched on immediately. In all, the cistern takes 19 hours to be full. How long was Pipe A open?

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Answered by aparna152

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Answer:

i don't know the answer of this question

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