Mr. X starts walking towards the West. After walking 70 m, then he turns to the left and walks 35 m straight. If he now turns left again and walks 30 m, and then he turns to the left and walks a distance of 35 m. How far will he be from the starting point finally?

40 m

The correct answer is Option (4) → 40 m

Step 1: Starting point

Mr. X walks towards West first → 70 m

• Now at point A: 70 m West of start

Step 2: First turn (left)

• Facing West, left → South
• Walk 35 m → now at point B: 70 m West, 35 m South

Step 3: Second turn (left)

• Facing South, left → East
• Walk 30 m → now at point C:
• West coordinate: 70 – 30 = 40 m West
• South coordinate: 35 m

Step 4: Third turn (left)

• Facing East, left → North
• Walk 35 m → now at point D:
• West coordinate: 40 m (unchanged)
• South coordinate: 35 – 35 = 0 m (back to same latitude as start)

Step 5: Distance from starting point

• West coordinate = 40 m
• South coordinate = 0 m

$\text{Distance} = \sqrt{40^2 + 0^2} = 40 \text{ m}$