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If the length of a river is 120 km and it flows at an average speed of 5 km/h, h

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Question: If the length of a river is 120 km and it flows at an average speed of 5 km/h, how long will it take for the river to flow from its source to its mouth? (2021)

Options:

  1. 20 hours
  2. 24 hours
  3. 30 hours
  4. 36 hours

Correct Answer: 24 hours

Exam Year: 2021

Solution: 

Time = Distance / Speed = 120 km / 5 km/h = 24 hours.

If the length of a river is 120 km and it flows at an average speed of 5 km/h, h

Practice Questions

Q1
If the length of a river is 120 km and it flows at an average speed of 5 km/h, how long will it take for the river to flow from its source to its mouth? (2021)
  1. 20 hours
  2. 24 hours
  3. 30 hours
  4. 36 hours

Questions & Step-by-Step Solutions

If the length of a river is 120 km and it flows at an average speed of 5 km/h, how long will it take for the river to flow from its source to its mouth? (2021)
  • Step 1: Identify the total length of the river, which is 120 km.
  • Step 2: Identify the average speed of the river, which is 5 km/h.
  • Step 3: Use the formula for time, which is Time = Distance / Speed.
  • Step 4: Plug in the values: Time = 120 km / 5 km/h.
  • Step 5: Calculate the result: 120 divided by 5 equals 24.
  • Step 6: Conclude that it will take 24 hours for the river to flow from its source to its mouth.
  • Distance, Speed, and Time Relationship – This question tests the understanding of the relationship between distance, speed, and time, specifically using the formula Time = Distance / Speed.
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