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Question

Rana travels 10 km North turns left and travels 4 km and then again turns right and covers another 5 km. He then turns to right-hand side and travels another 4 km. How far is he from the point of starting his journey?

A
15 km
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B
4 km
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C
5 km
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D
10 km
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Solution

The correct option is A 15 km
Let us consider a Cartesian plane thinking positive X-axis as East; negative one as West; positive Y-axis as North; negative as South.
Rana moves along Y axis 10 km and then parallel to X axis 4 km.
After that 5 km parallel to Y axis and again 4 km parallel to X axis towards positive direction.
Hence, finally it will be on Y axis at a distance of 15 km from the origin that is from the starting place.

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