Logical Reasoning
mediumQ. No. 19805
A runner covers 6 km North, 8 km East and 6 km South. What is the shortest distance from the start?
Last Updated:
A7 km
B9 km
C8 km
D13 km
Correct Answer: 8 kmYour Answer: C
Explanation
Step 1: Translate the route into horizontal and vertical components. | Step 2: 6 km North cancels 6 km South; 8 km East remains.
Important Notes
- Draw a north arrow before solving and take East as positive x, West as negative x, North as positive y, and South as negative y. |
- Combine opposite movements before calculating distance: cancel East with West and North with South. |
- Decide the final direction from the signs of the remaining horizontal and vertical displacements. For example, positive x and negative y indicate South-East. |