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Question

The front door of Mr X's house faces East. Mr X leaves the house, walking 50 m straight from the back door that is situated directly opposite to the front door. He then turns to his right, walks for another 50 m and stops. The direction of the point Mr X is now located at with respect to the starting point is ______.

The correct answer is

North-West

Let us solve this directional reasoning problem step-by-step to accurately determine Mr X's final position relative to his starting point.

Mr X's Directional Journey Explained

The problem describes Mr X's movement starting from his house and asks for his final direction from the initial point. We need to carefully trace his path, considering the directions and turns.

House Orientation and Starting Direction

  • The front door of Mr X's house faces East.
  • The back door is situated directly opposite to the front door. This means if the front door faces East, the back door must face West.
  • Mr X leaves the house, walking 50 m straight from the back door. Since the back door faces West, Mr X's initial movement is 50 m towards the West.

Tracing Mr X's Path Traversal

Let's represent the starting point of Mr X as the origin (0,0) on a coordinate plane, where East is the positive x-axis, West is the negative x-axis, North is the positive y-axis, and South is the negative y-axis.

Step 1: First Movement

  • Mr X walks 50 m straight from the back door.
  • Since the back door faces West, this movement is 50 m towards the West.
  • After this movement, Mr X's position relative to the starting point is 50 m West.
  • In coordinates, if he starts at \((0,0)\), he moves to \((-50, 0)\).

Step 2: Second Movement

  • From his current position (50 m West), he then turns to his right.
  • When a person is facing West, a right turn means turning towards the North.
  • He then walks for another 50 m in this new direction. So, this movement is 50 m towards the North.
  • After this movement, Mr X's position is 50 m West and 50 m North from the starting point.
  • In coordinates, from \((-50, 0)\), he moves 50 m North to \((-50, 50)\).

Determining Mr X's Final Location Direction

Mr X's final position is \((-50, 50)\) with respect to his starting point \((0,0)\). This means he is:

  • 50 m towards the West (negative x-axis direction) from the starting point.
  • 50 m towards the North (positive y-axis direction) from the starting point.

When an object is located both West and North of a reference point, its direction from that reference point is North-West.

Relative Direction Outcome

The direction of the point Mr X is now located at with respect to the starting point is North-West. This corresponds to the option provided as the correct answer.

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Important Questions from Direction and Distance

  1. Sita took an auto from her home in Andheri (A) to go to her college in Fatehpuri (F). Rather than continuing straight on the direct road to the college that had no turns, the auto driver took a diversion after 10 km and tumed right at Bandra (B) crossing, then at Colaba T- point (C) after 8 km turned left, again after covering 12 km turned left at Dalhousi Building (D) and soon after 8 km turned right at Elphinston point (E) and after covering 4 km reached Fatehpuri (F). Had the auto driver taken the direct route how much less distance would Sita have actually travelled between the starting point and the destination?

  2. Radha walks a distance of 9 m towards the South-East. Then she walks 15 m towards the West. From here, she walks 9 m towards the North-West. Finally she walks 6 m towards the East and stands at the point. How far is she standing from the starting point?

  3. According to the time by Nihaal's watch its half past one and the hour hand is pointing towards the north-east. Assuming that there is no change in Nihaal's position, in which direction would the minute hand point after 30 minutes?

  4. According to the time by Rohan's watch, it is half past 6 and the watch's hands are pointing to the south. In which of the given directions will the minute-hand point AFTER exactly 24 hours?

  5. According to the time by Rick's watch its quarter past eight. If the minute hand points towards the east, towards which direction would the hour hand point?

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