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A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average s

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Question: A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car? (2022)

Options:

  1. 75 km/h
  2. 80 km/h
  3. 85 km/h
  4. 90 km/h

Correct Answer: 80 km/h

Exam Year: 2022

Solution: 

Total distance = 150 km + 100 km = 250 km. Total time = 2 hours + 1 hour = 3 hours. Average speed = Total distance / Total time = 250 km / 3 hours = 83.33 km/h, which rounds to 80 km/h.

A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average s

Practice Questions

Q1
A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car? (2022)
  1. 75 km/h
  2. 80 km/h
  3. 85 km/h
  4. 90 km/h

Questions & Step-by-Step Solutions

A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car? (2022)
Correct Answer: 83.33 km/h
  • Step 1: Find the total distance traveled by the car. Add the two distances: 150 km + 100 km.
  • Step 2: Calculate the total distance: 150 km + 100 km = 250 km.
  • Step 3: Find the total time taken for the trip. Add the two times: 2 hours + 1 hour.
  • Step 4: Calculate the total time: 2 hours + 1 hour = 3 hours.
  • Step 5: Calculate the average speed using the formula: Average speed = Total distance / Total time.
  • Step 6: Substitute the values: Average speed = 250 km / 3 hours.
  • Step 7: Perform the division: 250 km / 3 hours = 83.33 km/h.
  • Step 8: Round the average speed to the nearest whole number: 83.33 km/h rounds to 80 km/h.
  • Average Speed Calculation – The average speed is calculated by dividing the total distance traveled by the total time taken.
  • Unit Consistency – Ensuring that distance and time are in compatible units (e.g., kilometers and hours) for accurate calculations.
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