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SSC CGL Model Paper 4

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Question : 17 of 100

Marks: +1, -0

A woman in a shopping complex walks 250 m East, then she turns North and walks 100 m, then she turns West and walks 120 m, then she turns to her left and walks 100 m. Where is she now with reference to her starting position?

130 m East
130 m West
370 m East
370 m West

Solution:

Concept:

Track net displacement along the East-West and North-South directions.

Explanation:

Let the starting point be

(0,0)

.

After

250\ \mathrm{m}

East:

(250,0)

.

After

100\ \mathrm{m}

North:

(250,100)

.

After

120\ \mathrm{m}

West:

(250-120,100)=(130,100)

.

She faces West, so her left turn is South.

After

100\ \mathrm{m}

South:

(130,100-100)=(130,0)

.

So her final position is

130\ \mathrm{m}

East of the start.

Answer:

130\ \mathrm{m}

East

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