From a certain place Ritu goes 30 km north, then turns right and walks 15 km. After that it turns right and walks 30 km. Tell how far is he from the starting point and what is his direction from there? MCQ with Answer and Explanation
From a certain place Ritu goes 30 km north, then turns right and walks 15 km. After that it turns right and walks 30 km. Tell how far is he from the starting point and what is his direction from there?
A. 45 km, east
B. 15 km, east
C. 45 km, north
D. 45 km, west
Answer: Option B
Solution (By JKExamLibrary)
Ritu walks 30 km North, 15 km East, and 30 km South. The North and South movements cancel each other out. She is exactly 15 km East of her starting point.
A man starts walking towards South and after taking a left turn he walks 30 metres. If he was then at a distance of 50 meters from the starting point, how much distance had he covered before turning to the left?
Explanation:
This forms a right triangle where the final hypotenuse distance is 50m, and one leg (the horizontal walk) is 30m. The vertical walk (y) is found using Pythagoras: y² + 30² = 50² -> y² + 900 = 2500 -> y² = 1600 -> y = 40m.
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