engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Quality and Characteristics of Sewage
The river water having a discharge of 200 ℓ/s and BODU of 20 mg/ℓ enters a community where a sewage discharge having BODU of 400 mg/ℓ raises the BODU of the complete mix to 70 mg/ℓ. The dilution ratio from the discharge of the said sewage is ______ (in decimal up to 2 places)
Enter numerical value using the virtual keypad. Round off where necessary.