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A lake has a volume of 10^8 m^3. A river flows into the lake at the rate of 310^5 m^3/day.

A lake has a volume of 10^8 m^3. A river flows into the lake at the rate of 3×10^5 m^3/day.

. The same amount of pure water evaporates from the lake each day, so the volume of the lake does not change. The river contains 7 % pollution. The lake is initially unpolluted.

(a) What is the percentage pollution in the lake after t days?  __________% 

(b) When does the pollution in the lake reach 1%? after ______ days 

Top Answer

a) percentage of pollution in lake after t days =  ​ 1 0 ​ 8 ​ ​ ​... View the full answer

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please find the... View the full answer

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