Example 1 · level 1
The pie chart shows how the Iyer family spends its monthly income of ₹1,20,000. How much is spent on Food?
- ₹1,500
- ₹5,000
- ₹6,000
- ₹18,000
Show solution
- Food = 15% of ₹1,20,000.
- = 15 × 1,20,000 ÷ 100 = ₹18,000.
Answer: ₹18,000
ABHYAS PREP: DATA INTERPRETATION · DATA INTERPRETATION
Pie chart: amounts, ratios and central angles
A pie chart shows shares of a total. Amount = share% × total; central angle = share% × 3.6°; the ratio of two heads is the ratio of their percentages.
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Worked examples
Example 2 · level 2
In the pie chart of the Khan family’s spending, what is the central angle of the Education sector?
- 27°
- 36°
- 18°
- 5°
Show solution
- Angle = 5% × 360° ÷ 100.
- = 5 × 3.6 = 18°.
Answer: 18°
Example 3 · level 3
the Khan family has a monthly income of ₹50,000. By how much does the spending on Rent differ from the spending on Others?
- ₹20
- ₹5,000
- ₹10,000
- ₹20,000
Show solution
- Difference = 10% − 30% = 20% of the income.
- = 20 × 50,000 ÷ 100 = ₹10,000.
Answer: ₹10,000