Question 1196893
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For your information and for your education


<pre>
    It is well known fact form Science that ratio of masses of radioactive Carbon-14
    to the regular stable Carbon-12 in any live organic organism is about  {{{1}}}:{{{10^12}}}.


    Therefore, if the mass of radioactive Carbon-14 in a sample is 2 mg, it 
    means that the regular Carbon-12 in the same sample has the mass


        {{{2*10^12}}} mg = {{{2*10^9}}} grams = {{{2*10^6}}} kilograms = {{{2*10^3}}} metric tons = 2000 metric tons.


    2000 metric tons is the mass of fully loaded freight train consisting of 100 wagons, 
    or is the mass of two  fully loaded freight trains consisting of 50 wagons each.
</pre>

About these facts, see this Wikipedia article


https://en.wikipedia.org/wiki/Carbon-14



I want to say that, &nbsp;when somebody starts create his or her own problems in &nbsp;Math,

this person should be &nbsp;(and MUST be) &nbsp;familiar with a subject, &nbsp;he or she is writing about.



Otherwise, &nbsp;the whole ugly picture is obtained.


Ugly picture to such a degree that spreading/distribution such problems in the Internet becomes anti-pedagogic.