CA Foundation · Quantitative Aptitude · Direction Tests
Sanjay starts from his office, walks 9 km towards the west, then turns left and walks 12 km. He then turns left again and walks 9 km. How far is he from the office now?
Sanjay is 12 km from the office. His 9 km west and 9 km east movements cancel each other, leaving only the 12 km southward displacement, so the final position lies directly south of the office at 12 km.
- A12 kmCorrect
- B15 km
- C21 km
- D9 km
Explanation
West 9 km, then left means south 12 km, then left again means east 9 km. The west and east movements cancel, leaving 12 km south. No Pythagoras is needed since net displacement is only along one line. The 15 km option wrongly applies Pythagoras to 9 and 12.
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