Concept:Track the net displacement by following each turn and movement.
Explanation:Assume starting direction from
X to
Y is East.
Start at
X (0,0). Walk 80 m East →
Y at (80,0).
Turn right (now South), walk 50 m → (80,-50).
Turn right (now West), walk 70 m → (10,-50).
Turn right (now North), walk 50 m → (10,0).
Final position is 10 m East of start.
Answer:10 metres