Pie Charts and Proportions

Practice bank for UCAT Quantitative Reasoning questions involving pie charts, proportions, and percentage-based data.

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Quick-Reference: Pie Charts

Key Principles

A pie chart shows parts of a whole. The entire circle = 100% = 360 degrees. Each slice is a proportion of the total.

Converting Between Formats

From	To	Method
Percentage	Degrees	Multiply by 3.6
Degrees	Percentage	Divide by 3.6
Percentage	Actual value	(Percentage / 100) x Total
Actual value	Percentage	(Value / Total) x 100

Common Pie Chart Questions

1. Find the value of a slice — read the percentage, multiply by total
2. Compare two slices — find each value, then subtract or form a ratio
3. Combine slices — add percentages, then convert to value
4. Find what remains — subtract all given percentages from 100%

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Strategy