Length of Train A = 240 meters
Length of Train B = 270 meters
Speed of Train A = 60 km/h
Speed of Train B = 48 km/h
The trains are moving toward each other.
We are to find the time they take to completely cross each other.
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✅ Step 1: Total distance to be covered = Sum of lengths of both trains
= 240 m + 270 m = 510 meters
✅ Step 2: Total relative speed = Sum of both speeds (since they are moving toward each other)
= 60 km/h + 48 km/h = 108 km/h
Convert to meters/second:
108 × (1000 ÷ 3600) = 30 m/s
✅ Step 3: Time = Distance ÷ Speed
= 510 ÷ 30 = 17 seconds
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✅ Final Answer: The trains will take 17 seconds to cross each other.
A pie chart is a circular graph used to show how a whole is divided into different parts. Each “slice” of the pie represents a category, and its size reflects that category’s proportion or percentage of the total.
It’s one of the simplest and most visual ways to display data — especially when comparing parts of a whole.
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🎯 Key Features of a Pie Chart:
The entire circle represents 100% of the data.
Each slice represents a specific category or group.
Larger slices mean higher values or proportions.
Often color-coded and labeled for clarity.
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🔍 How to Extract Insights from a Pie Chart:
1. Read the Title & Labels
Start by understanding what the chart is showing — it could be market share, survey responses, budget breakdowns, etc.
2. Look at Slice Sizes
Compare slice sizes to see which categories are biggest or smallest.
The largest slice shows the most dominant group.
3. Check Percentages or Values
If percentages or numbers are given, use them to understand how much each slice contributes to the whole.
4. Group Related Slices (if needed)
Sometimes combining smaller slices can help identify trends (e.g., combining all “Other” categories).
5. Ask Questions Like:
- Which category has the largest share?
- Are any categories equal in size?
- How balanced is the distribution?