A train travels 120 km at a speed of 60 km/h and then 180 km at a speed of 90 km

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Question: A train travels 120 km at a speed of 60 km/h and then 180 km at a speed of 90 km/h. What is the total time taken for the journey?

Options:

Correct Answer: 5 hours

Solution:

Time = 120/60 + 180/90 = 2 + 2 = 4 hours.

A train travels 120 km at a speed of 60 km/h and then 180 km at a speed of 90 km/h. What is the total time taken for the journey?

A train travels 120 km at a speed of 60 km/h and then 180 km at a speed of 90 km/h. What is the total time taken for the journey?

Step 1: Identify the first part of the journey. The train travels 120 km at a speed of 60 km/h.
Step 2: Calculate the time taken for the first part of the journey using the formula: Time = Distance / Speed. So, Time = 120 km / 60 km/h.
Step 3: Perform the calculation for the first part: 120 / 60 = 2 hours.
Step 4: Identify the second part of the journey. The train travels 180 km at a speed of 90 km/h.
Step 5: Calculate the time taken for the second part of the journey using the same formula: Time = Distance / Speed. So, Time = 180 km / 90 km/h.
Step 6: Perform the calculation for the second part: 180 / 90 = 2 hours.
Step 7: Add the time taken for both parts of the journey together: 2 hours (first part) + 2 hours (second part) = 4 hours.
Step 8: Conclude that the total time taken for the journey is 4 hours.

Speed, Distance, and Time – Understanding the relationship between speed, distance, and time, where time is calculated as distance divided by speed.