A lady, while going to her college in a car, drove 20 km towards north and then 15 km towards west. She then turned to the south and covered 10 km. Further she turned to the east and moved 12 km. Finally she turned right and drove 10 km. How far and in which direction is the lady from her starting point?
A5 km, south
B5 km, west
C3 km, west ✓ Correct
D3 km, north
Correct answer: (C) 3 km, west
Explanation
The lady is 3 km to the west.
North 20, west 15: at (-15, 20).
South 10: at (-15, 10); east 12: at (-3, 10).
Right turn faces south; 10 south: at (-3, 0).
x = -3, y = 0, so 3 km west.
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