Discussion
Shyam goes 5 km. in the North from his school. Now, turning to the left, he goes to 10 km. and again turns to left and goes to 5 km. How far he is from his school and in which direction ?
Answer: C
Shyam is 10 km. West from school.
He walks 5 km north. Facing north, a left turn points him west, and he goes 10 km. Facing west, another left turn points him south, and he goes 5 km.
The 5 km south cancels the 5 km north, so he ends up directly west of the school, 10 km away. East would follow from right turns, and north or south would ignore that the two 5 km legs cancel.
Drawing the route on rough paper with north at the top is the safest way to solve direction questions.
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