Multiple choice general knowledge math & puzzles

Ravi left home and cycled 10 km towards South, then turned right and cycled 5 km and then again turned right and cycled 10 km. After this he turned left and cycled 10 km. How many kilometers will he have to cycle to reach his home straight?

  1. 10 km

  2. 15 km

  3. 20 km

  4. 25 km

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ravi travels 10km South, 5km West, and 10km North, which returns him to the same latitude as his home, but 5km West of it. He then travels 10km further West. Total distance West is 15km, so he must travel 15km East to return.