1.

WATER_FLOWING_WITH_TSS_AT_THE_RATE_OF_40_LITER/MIN,_IS_DISCHARGED_INTO_A_RIVER_FLOWING_AT_THE_RATE_OF_20_LITER/MIN,_IF_THE_CONCENTRATION_OF_TSS_IN_THE_RIVER_IS_5_MG/L,_WHAT_IS_THE_CONCENTRATION_OF_TSS_IN_WATER??$

A. 5 mg/L
B. 10 mg/L
C. 15 mg/L
D. 20 mg/L
Answer» C. 15 mg/L


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