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In a lake, one-fourth of the water is replaced by clean water every year. Sixteen thousand cubic meters of soluble toxic chemical spill takes place in the lake.

How much toxic will be left after 12 years?
When will 80% of the toxin be eliminated?

User Lot
by
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1 Answer

3 votes

Answer:

7 sorry if I’m wrong

Explanation:

User Prathap Badavath
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