In the ratio 1:4, what percentage of the total does the first part represent?
- A.15%
- B.20% ✓
- C.25%
- D.40%
Explanation: Total parts = 1+4 = 5. First part = 1/5 = 20%.
Class 6 IMO Mathematics Olympiad practice · Arithmetic · Ratio, Proportion & Percentages
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