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A radioactive substance decays exponentially with a half-life of 500 years. After 1500 years, what percent of the radioactive material remains?
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A radioactive substance decays exponentially with a half-life of 500 years. After 1500 years, what percent of the radioactive material remains?

User Leandro Galluppi
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1 Answer

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12.5%, every 500 years you take away half of the substance (50%) -> 25% -> 12.5%
you divide your number 3 times because 1500/500=3
User Loxs
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