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Alayn h uderstands the half life of a certain substance is 90days. how long would it take for 80lbs of her substance to be reduced to 20lbs

Alayn h uderstands the half life of a certain substance is 90days. how long would it take for 80lbs of her substance to be reduced to 20lbs
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alayn h uderstands the half life of a certain substance is 90days. how long would it take for 80lbs of her substance to be reduced to 20lbs

User Tyler Wall
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Answer:

135 days...............

User Yanhua
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