6. Co - 60 is used extensively in radiotherapy. Its half- life is 5.27 years. How many years will it take to decrease to 30.0% of its original amount?

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6. Co - 60 is used extensively in radiotherapy. Its half - life is 5.27 years. How many years
will it take to decrease to 30.0% of its original amount?
Transcribed Image Text:PROBLEM SOLVING. Use four decimal places all throughout your solution. Show complete solution. Keep your solutions organized and as neat as possible. Enclose all final answers with a box. 6. Co - 60 is used extensively in radiotherapy. Its half - life is 5.27 years. How many years will it take to decrease to 30.0% of its original amount?
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