1.

Pipe A Can Fill A Tank In 20 Minutes And Pipe B In 30 Minutes Respectively. Pipe C Can Empty The Same In 40 Minutes. If All The Three Pipes Are Opened Together, Find The Time Taken To Fill The Tank?

Answer»

NET PART filled in 1 hour = ( 1/20 – 1/30 – 1/40) = 7 / 120

THEREFORE TANK will be filled in = 120/7 = 17 1/7 minutes.

Net part filled in 1 hour = ( 1/20 – 1/30 – 1/40) = 7 / 120

Therefore tank will be filled in = 120/7 = 17 1/7 minutes.



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