Follow the four stages of problem solving as prescribed by Polya in your solution.
Your house is 3 km due north of a river that runs east-west. Your grandmother’s house is located 12 km west and 1 km north of your house. Every day, you go from your house to Grandma’s house, but first visit the stream (to get fresh water for Grandma). What is the length of the route with minimum distance?
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rank and file are you getting
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