Solved IB ACIO Question
A solved IB ACIO PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Direction Sensemedium · 45s
A person walks 4 km west, right 9 km north, east 12 km, south 3 km. How far is he from starting point?
TopicDirection Sense
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
East-west displacement: 12 km east - 4 km west = 8 km east.- North-south displacement: 9 km north - 3 km south = 6 km north- Distance = √(8² + 6²) = √(64 + 36) = √100 = 10 km.
Final Answer: Option D - 10 km