TWO planes E and F start flying from the same point. B flies 7 km west: then turns to its left and flies 15 km. Meanwhile F flies 11 km east and turns right and flies 15 km. Where is F with respect to E?

Correct option is A

Let us assume a coordinate system where “east” is positive x-direction and “north” is positive y-direction:
1. Plane E:
· Starts at (0,0).
· Moves 7 km west → new position is (−7,0).
· Then “turns left” from west → left turn from heading west means going “south” if we assume standard orientation (facing west, your left is south).
· Flying 15 km south → new position (−7,−15).
2. Plane F:
· Starts also at (0,0).
· Flies 11 km east → new position (11,0).
· Then “turns right” from heading east → a right turn from east is “south.”
· Flies 15 km south → new position (11,−15).
Now, the difference in x-coordinates between F and E is 11 - (-7) = 18. Their y-coordinates are both -15, so they are side-by-side along the same horizontal line, with F being 18 km to the east of E.