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Two pipes can fill a tank In 20 minutes and 30 minutes respectively. If both the pipes are opened simultaneously, then the tank will be filled in (a) 10 minutes (b) 12 rendes (c) 15 minutes (d) 25 minutes |
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Answer» Two pipes can fill a tank In 20 minutes and 30 minutes respectively. If both the pipes are opened simultaneously, then the tank will be filled in (a) 10 minutes (b) 12 rendes (c) 15 minutes (d) 25 minutes |
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