AP ICET 10 Sep 2020 Shift 1 Paper

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Question : 97 of 200
 
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Tap A and Tap B can fill a tank independently in 31/2 hours and 41/2 hours respectively. Tap A is opened at 6:00 AM. After that tap B is opened at 7:10AM, then the time at which tank will be full of water is
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