Question 1162876
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After 20 minutes, an initial sample of 192 grams of a radioactive element decays to 6 grams. Determine the half-life of the element. 


this is a grade 11 {{{highlight(cross(function))}}} <U>question</U>, i just want to know how to answer it with the equations and how to solve.
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<pre>
{{{192/6}}} = 32 = {{{2^5}}}.


5 half lives in 20 minutes.


One half-life period is  {{{20/5}}} = 4 minutes.
</pre>


Consider it as a joke Math problem.



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On radioactive decay, see the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/logarithm/Radioactive-decay-problems.lesson>Radioactive decay problems</A> 

in this site.