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Direction Sense
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DSSSB PRT 2022 Afternoon 📅 16 Mar, 2022

Point A is 60m West of C. Point B is 40m North of C. Point C is 50m North of D. Point B is 30m East of E. Point F is 80m South of E. How far and in which direction is A from F?

A
70m, South-East
B
70m, North-West
C
50m, South-East
D
50m, North-West
Result Summary
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DSSSB PRT
2022 • 16 Mar, 2022 • Afternoon
Point A is 60m West of C. Point B is 40m North of C. Point C is 50m North of D. Point B is 30m East of E. Point F is 80m South of E. How far and in which direction is A from F?
Correct Answer
50m, South-East
• **Coordinates:** Let C = (0,0). * A = (-60, 0). * B = (0, 40). * C is 50m N of D -> D = (0, -50). * B is 30m E of E -> E = (-30, 40). * F is 80m S of E......
Ref/Book : DSSSB PRT 2022
Ref. Subject Mental Ability
Chapter -
Ref. Topic Direction Sense
Pg. No -
💡 Analysis & Explanation
• **Coordinates ▼
** Let C = (0,0).
* A = (-60, 0).
* B = (0, 40).
* C is 50m N of D -> D = (0, -50).
* B is 30m E of E -> E = (-30, 40).
* F is 80m S of E -> F = (-30, 40-80) = (-30, -40).
• **Distance A to F ▼
**
* A(-60, 0), F(-30, -40).
* Horizontal diff ▼
30. Vertical diff: 40.
* Dist = √(30² + 40²) = 50m.
• **Direction of A from F ▼
**
* From F(-30, -40) to A(-60, 0).
* Move West (-30 to -60) and North (-40 to 0).
* Direction ▼
North-West.
• **Discrepancy ▼
** Source says (C) 50m, South-East.
* Note ▼
'A from F' vs 'F from A'. F is SE of A. A is NW of F.
* Hindi ▼
'A, F se kitni doori tatha kaun si disha mein hai?' (A is in which direction from F).
* Answer should be NW. But source says SE.
* Source Answer ▼
(C).
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