Mathematics, 06.04.2021 21:20 MeowieMeowMeow6500

Element X is a radioactive isotope such that every 91 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 80 grams, how long would it
be until the mass of the sample reached 68 grams, to the nearest tenth of a year?

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Element X is a radioactive isotope such that every 91 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 80 grams, how long would it be until the mass of the sample reached 68 grams, to the nearest tenth of a year?

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Another question on Mathematics

Element X is a radioactive isotope such that every 91 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 80 grams, how long would it
be until the mass of the sample reached 68 grams, to the nearest tenth of a year?