A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a

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Question: A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a speed of 60 km/h. What is the average speed of the train for the entire journey? (2020)

Options:

40 km/h
45 km/h
50 km/h
55 km/h

Correct Answer: 45 km/h

Exam Year: 2020

Solution:

Total distance = 120 km. Time for first part = 60/30 = 2 hours. Time for second part = 60/60 = 1 hour. Total time = 3 hours. Average speed = Total distance / Total time = 120/3 = 40 km/h.

A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a

Practice Questions

A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a speed of 60 km/h. What is the average speed of the train for the entire journey? (2020)

40 km/h
45 km/h
50 km/h
55 km/h

Questions & Step-by-Step Solutions

A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a speed of 60 km/h. What is the average speed of the train for the entire journey? (2020)

Step 1: Calculate the total distance traveled by the train. The train travels 60 km in the first part and 60 km in the second part. So, total distance = 60 km + 60 km = 120 km.
Step 2: Calculate the time taken for the first part of the journey. The speed is 30 km/h, and the distance is 60 km. Time = distance / speed = 60 km / 30 km/h = 2 hours.
Step 3: Calculate the time taken for the second part of the journey. The speed is 60 km/h, and the distance is 60 km. Time = distance / speed = 60 km / 60 km/h = 1 hour.
Step 4: Calculate the total time for the entire journey. Total time = time for first part + time for second part = 2 hours + 1 hour = 3 hours.
Step 5: Calculate the average speed of the train for the entire journey. Average speed = total distance / total time = 120 km / 3 hours = 40 km/h.

Average Speed Calculation – The average speed is calculated by dividing the total distance traveled by the total time taken.
Time and Speed Relationship – Understanding how to calculate time based on distance and speed is crucial for solving problems involving average speed.

A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a

What’s inside this PDF?

A train travels 60 km at a speed of 30 km/h and then travels another 60 km at a

Practice Questions

Questions & Step-by-Step Solutions

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