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A delivery van drives 21 km south, then turns left and drives 72 km. What is the straight-line distance between where it started and where it stopped?

Competition practiceDirection Sense
  • A75 km
  • B93 km
  • C51 km
  • D78 km

Step-by-Step Solution

Turning left while heading south means heading east, so the two legs are at right angles: √ √(441 + 5184) = √5625 = 75 km.
Answer: A) 75 km

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