A vehicle starts from point P and runs 10 km towards north. It takes a right turn and runs 15 km. Then it runs 6 km after taking a left turn. Finally, it takes a left turn, runs 15 km, and stops at point Q. How far is point Q from point P?

16 km
14 km
10 km
0 km

Correct answer: 16 km

Solution

After moving 10 km north, the vehicle goes 15 km east, then 6 km north, and finally 15 km west. The east and west movements cancel each other, leaving only the northward displacement. Total northward distance from P is 10 + 6 = 16 km.

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