CA Foundation · Quantitative Aptitude · Direction Tests
Meera starts from her school and walks 12 m towards the west, then turns right and walks 5 m. How far is she from the school?
Meera is 13 m from the school. Walking west and then turning right to go north makes a right angle, so the straight-line distance is the hypotenuse, √(12² + 5²) = √169 = 13 m, not the sum of the legs.
- A7 m
- B13 mCorrect
- C17 m
- D11 m
Explanation
Her two walks are at right angles (west, then north). Distance = √(12² + 5²) = √(144 + 25) = √169 = 13 m. Option 17 m adds the two legs instead of using the hypotenuse.
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