Shyam went 15 km to the West from his house, then turned left and walked 20 km. He then turned to the East and walked 25 km, and finally, turning left, he covered 20 km. How far is he from his house?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 10 km
A left turn moves the facing direction one step anticlockwise (West → South, East → North). Keep a running total of the distance from the house.
Facing West, 15 km: 15 km west of the house
Turns left, now facing South, 20 km: 15 km west, 20 km south
Turns to the East, 25 km: \(25-15=10\) km east, 20 km south
Turns left, now facing North, 20 km: \(20-20=0\) km south, 10 km east
He is 10 km (due East) from his house.
