Question**: A train travels at a speed of 60 km/h. If it increases its speed by 20%, how far will it travel in 3 hours? - jntua results
Title: Trains and Speed: How a 20% Increase Affects Travel Distance in 3 Hours
Title: Trains and Speed: How a 20% Increase Affects Travel Distance in 3 Hours
When traveling by train, speed plays a crucial role in determining how far you’ll go in a given time. Imagine a train cruising at a steady 60 km/h. But what happens if that speed increases by 20%? How much farther will it travel in just 3 hours? Let’s break this down with a clear, practical calculation.
Understanding a 20% Speed Increase
Understanding the Context
A 20% increase on a 60 km/h train means adding 20% of 60 km/h to the original speed:
\[
60 \, \ ext{km/h} \ imes 0.20 = 12 \, \ ext{km/h}
\]
Adding this to the original speed gives the new speed:
\[
60 \, \ ext{km/h} + 12 \, \ ext{km/h} = 72 \, \ ext{km/h}
\]
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Key Insights
So, the train now travels at 72 kilometers per hour.
Distance Traveled in 3 Hours
To find how far the train goes in 3 hours at 72 km/h, use the simple formula:
\[
\ ext{Distance} = \ ext{Speed} \ imes \ ext{Time}
\]
Substituting the values:
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\[
\ ext{Distance} = 72 \, \ ext{km/h} \ imes 3 \, \ ext{hours} = 216 \, \ ext{km}
\]
Real-World Implications
This means, with a 20% speed boost, the train covers 216 kilometers in just 3 hours—more than 3.5 times the distance it would travel at the original 60 km/h. This calculation emphasizes the importance of even small speed improvements in rail travel for time efficiency and operational planning.
Final Answer
If a train initially travels at 60 km/h and increases its speed by 20%, it will travel 216 kilometers in 3 hours.
Keywords: train speed, train travel distance, 60 km/h train, 20% speed increase, train travel calculation, how fast does a train go in 3 hours, speed and distance formula, train efficiency, travel distance formula
Meta Description: Discover how a 20% speed increase boosts a train’s travel distance—calculate how far a 60 km/h train covers in 3 hours with a 72 km/h speed increase.
