Pipe A and Pipe B together can fill the tank in 60 min.?

 Efficiency of Pipe A , B and C are in the ratio of 2 : 3 : 1. Pipe A and Pipe B are the inlet pipes whereas Pipe C is the outlet pipe. Find out the time taken by A and C together to fill the tank?

(a) 240 min

(b) 280 min

(c) 300 min

(d) 320 min

(e) 360 min

2 Answers

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  • 1 month ago
    Favourite answer

    Pipe A fills the tank at a rate of 2/5 tank per 60 min.

    Pipe B fills at 3/5 tank per 60 min.

    So pipe C `emptied it at 1/5 tank per 60 min.

    Pipes A and C fill it at a rate of 2/5 - 1/5 = 1/5 tank per 60 min which would be 1 tank per 300 min.

    IMO anyway

  • ted s
    Lv 7
    1 month ago

    if " 5 " somethings require 60 minutes then " 1 " somethings would require 300 minutes

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