Hi I need help on a question but I will post a similar example as then I am not cheating.
A water treatment plant is used to supply 10 million litres a day by treating a portion and blending it with untreated water.
The quality needed is that the water have a salt content of 50 mg per liter
The untreated water has a salt content of 500 mg per liter and the treated has a salt content of 5 mg per liter.
Calculate the throughput of the treatment plant assuming 25% of the feed to the plant is reject.