<PRE><B>Question 1158562</B>
.


This problem, &amp;nbsp;as it is presented in the post, &amp;nbsp;has &amp;nbsp;HUGE &amp;nbsp;deficiency.


The solution is true &amp;nbsp;ONLY &amp;nbsp;IF &amp;nbsp;the distance from the &amp;nbsp;B&amp;K &amp;nbsp;house to the grandmother house is &amp;nbsp;LONG &amp;nbsp;ENOUGH. 


More concretely, &amp;nbsp;if this distance is longer than &amp;nbsp;3*60 = 180 miles.


If the distance is shorter, &amp;nbsp;then the solution &amp;nbsp;FALLS.


An &amp;nbsp;&lt;U&gt;ACCURATE&lt;/U&gt; &amp;nbsp;formulation should &amp;nbsp;SPECIALLY &amp;nbsp;reserve/negotiate it.



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