<PRE><B>Question 1169566</B>
.


My post is the &amp;nbsp;CORRECTION &amp;nbsp;to the answer by @josgarithetic.



The correct answer is :


&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;the present ages are &amp;nbsp;10 years &amp;nbsp;(the brother) &amp;nbsp;and &amp;nbsp;20 &amp;nbsp;years (Yato).




The answer &amp;nbsp;b= 4 &amp;nbsp;for the brother, &amp;nbsp;given by @josgarithmetic, &amp;nbsp;is INCORRECT &amp;nbsp;and does not work.



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