Three pipes A B and C can fill a tank in 20 hours. After working at it together for 5 hours C is closed and A and B fill it in 30 hrs. C alone can fill it in

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Three pipes A B and C can fill a tank in 20 hours. After working at it together for 5 hours C is closed and A and B fill it in 30 hrs. C alone can fill it in

1.35 hrs

2.40 hrs

3.30 hrs

4.28 hrs

Posted Date:-2021-09-20 02:50:13

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