- A10√2 km, North-East
- B10√2 km, South-East
- C10 km, South
- D20 km, East
Step-by-Step Solution
Taking Q as origin, R is at (10, 0) and S is 10 km South of R at (10, -10). So S is 10 km East and 10 km South of Q: distance √(100+100) = 10√2 km, to the South-East.
Answer: B) 10√2 km, South-East