Question

A man walks 30 m towards south. Then, turning to his right, he walks 30 m. Then, turning to his left, he walks 20 m. Again, turning to his left, he walks 30 m. How far is he from his starting point?

• A. 80 m
• B. 30 m
• C. 50 m
• D. 20 m

Answer 1

Answer:

C. 50 m

Here's how to visualize the man's movements:

• Starts facing South, walks 30m down.

• Turns right (now facing West), walks 30m left. * Turns left (now facing South again), walks 20m down.

• Turns left (now facing East), walks 30m right.

If you picture this, the 30m walk East cancels out the 30m walk West. So, he's moved a net of 30m + 20m = 50m South.

Therefore, the man is 50 meters from his starting point.