Revati goes towards South-East a distance of 7 km, then she goes towards west a distance of 14 km. From here she goes towards North-West a distance of 7 km and finally she goes a distance of 4 km towards east. How far is she now from the starting point?

3 km

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4 km

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10 km

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11 km

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Solution

The correct option is B 10 km
Suppose Revati starts from point A,
She walks 7 km towards South-East, then 14 km towards West.
After that she walks 7 km towards North-West and finally walks 4 km towards East.
The following details have been showed in above figure also,
and from the figure we can see that the distance between starting and ending point is $14 - 4 = 10$ km.
Hence, option (C) is the correct answer.

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