3 years ago in Time and Work

Two pipes A and B can fill a tank in 36 hours and 45 hours respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank?

[A] 25 hrs
[B] 45 hrs
[C] 16 hrs
[D] 20 hrs
[E] None of these
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Sayed badruzama
Sayed badruzama - 3 years ago

Sayed badruzama from Mumbai, India is saying 20 hrs is correct answer

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