Question

A paper-delivery boy wants to park his cycle at some point P on the street and delivers the newspapers to houses A and B. Where should he park the cycle so that his walking distance AP + BP will be least? You can use reflectional symmetry here. Let A¹ be the image of A in the mirror line which is the street here. Then the point P is the ideal place to park the cycle (where the mirror line and A¹ B meet). Can you say why?I want the answer why he is should use P as ideal place.(Check the last part if the question.)​

Answer 1

Answer:

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