Question: A process stream contains 4% (weight) salt and the rest water. This is prepared by passing a part of pure water stream through a saturator

A process stream contains 4% (weight) salt and the rest water. This is prepared by passing a part of pure water stream through a saturator containing the salt. The solution leaving the saturator containing 20% salt is mixed with the pure water bypassed to get the process stream. What fraction of the pure water available is to be bypassed through the saturator?

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