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Q: The speed of boat in stagnant water is 9 km/hr and the river is flowing at a speed of 6 km/hr. We left a point and reached a point 30 km upstream and are back at the starting point at 6 p.m. When did we start the journey?
  • A. 6 am
  • B. 9 am
  • C. 12 noon /12 दोपहर
  • D. 3 pm
Correct Answer: Option A -
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Explanations:

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