In a certain situation, wastewater having dissolved oxygen of 2.36 mg/l is discharged at a 1.25 m³/sec rate into a river flowing with 9.5 m³/sec. After mixing, the dissolved oxygen at the point of discharge is 7.36 mg/l. The initial dissolved oxygen in the river water before the discharge of wastewater is?

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In a certain situation, waste water having dissolved oxygen of 2.36 mg/lt is discharged at 1.25 m3/sec rate in the river flowing with 9.5 m3/sec. After mixing the dissolved oxygen at the point of discharge is 7.36 mg/lt. The initial dissolved oxygen in the river water before discharge of waste water is,

In a certain situation, waste water having dissolved oxygen of 2.36 mg/lt is discharged at 1.25 m3/sec rate in the river flowing with 9.5 m3/sec. After mixing the dissolved oxygen at the point of discharge is 7.36 mg/lt. The initial dissolved oxygen in the river water before discharge of waste water is,

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The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

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In a certain situation, wastewater having dissolved oxygen of 2.36 mg/l is discharged at a 1.25 m³/sec rate into a river flowing with 9.5 m³/sec. After mixing, the dissolved oxygen at the point of discharge is 7.36 mg/l. The initial dissolved oxygen in the river water before the discharge of wastewater is?

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