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  9. Q81

RRB NTPC 2021 · Question 81 of 131

What is Ram's average speed if he goes from Point X to Point Y at 8 km/hr and returns from Point Y to Point X at 12 km/hr?

  1. A8.6 km/hr
  2. B10.6 km/hr
  3. C9.6 km/hrCorrect
  4. D15.6 km/hr

Answer: C. 9.6 km/hr

Explanation

Average Speed = (2×8×12)/12+8 = (2×8×12)/20 = 96/10=9.6km/h

Source: RRB NTPC 2021 CBT 1 Previous Year Paper (3 Feb) — ixambee compilation with answer key · reliable-secondary

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