Question

A pristine stream flowing at 139 cubic feet per second (cfs) in the Sierras contains 5 mg/L of suspended solids (TSS). During the spring, ice melt conveys an additional 202 mg/L of TSS at a rate of 24 cfs into the stream. By how much (mg/L) does the concentration of TSS increase during spring? (Hint: Treat the ice melt as a secondary stream added to the first.)

Answer is 29

Answer 1