Question 1203035
.
<pre>

It is  P = {{{(51.9-50.6)/(52.0-50.0)}}} = 0.65.    <U>ANSWER</U>


To calculate it, you should take a working interval time duration (which is in the numerator) 
and relate it to the full base time interval (which is in the denominator).


It is how the uniform distribution works.
</pre>

Solved.