ase check the question in the link below, it is almost the same with few changes mention here in bold The stream has an unknown BOD concentration C0=?...

hi,

Please check the question in the link below, it is almost the same with few changes mention here in bold

The stream has an unknown BOD concentration C0=? (instead of 20 mg/L). The regulatory limit at the discharge of Pond 2 is 25 mg/L (C2 = 20 mg/l). Find the maximum BO concentration leaving Pond 1 and in the stream (C0 =? and C1 =?).

https://www.chegg.com/homework-help/questions-and-answers/16-given-two-pond-system-shown-figure-p112-pg-42-text-fed-stream-flow-rate-10-mgd-millions-q6472901