In the evening, before sunset, X is facing towards the right hand side of the direction where his shadow is falling. He then turns right and walk 20 m.…
In the evening, before sunset, X is facing towards the right hand side of the direction where his shadow is falling. He then turns right and walk 20 m. Then, he turns right again and walks 10 m. Then, he turns left and walks 10 m, and then turning right, he walks 20 m. Then, he turns right again and walks 30 m. At what distance and in which direction is X now from the starting point?
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Correct answer: (A) 30 m, north
Explanation
Before sunset the shadow falls east, so X faces south. His moves are 20 m west, 10 m north, 10 m west, 20 m north and 30 m east. The east-west moves cancel out (30 west, 30 east), leaving him 30 m north of the start.