A person walks 5 km in north-east direction from his place, turns towards south and stops after walking 4 km. At what distance is he from his previous position? MCQ with Answer and Explanation
A person walks 5 km in north-east direction from his place, turns towards south and stops after walking 4 km. At what distance is he from his previous position?
A. 9 km
B. 3 km
C. 6 km
D. 4 km
Answer: Option B
Solution (By JKExamLibrary)
This forms a 3-4-5 right-angled triangle. Walking 5 km North-East implies 3 km East and 4 km North. Walking 4 km South brings him back to the horizontal axis, 3 km East of his starting position.
Meena rides 12 km north, then turns to her left and rides 10 km. Neena rides 22 km west, then turns north and rides 8 km, then turns east and rides 5 km, then turns to her left and rides 4 km. Where is Meena now with respect to Neena?
Explanation:
Meena's coordinates: (0, 12) -> (-10, 12). Neena's coordinates: (-22, 0) -> (-22, 8) -> (-17, 8) -> (-17, 12). Meena is at x = -10, Neena is at x = -17. Meena is 7 km East of Neena.
Vinayak walks 5m in South and then he turns to his left and walks 12m. After that he again turns towards south and walks 8 metres. Then he turns to his right and walks 15 metres. In which direction is Vinayak now with respect to his starting point?
Explanation:
Path: 5m South, 12m East (left turn), 8m South, 15m West (right turn). Total South = 5 + 8 = 13m. Total West = 15 - 12 = 3m. Since he is South and West of his origin, he is in the South-West direction.
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