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Q: Richa travels from A to B at the speed of 15km/h, from B to C at 20 km/h, and from C to D at 30 km/h. If AB = BC = CD, then find the Richa's average speed.
  • A. 17 km/h
  • B. 20 km/h
  • C. 18 km/h
  • D. 19 km/h
Correct Answer: Option B -
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Explanations:

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