Express the ratio 15:20 in simplest form.
- A.3:4 ✓
- B.4:5
- C.5:6
- D.2:3
Explanation: Dividing both terms by their HCF, 5: 15÷5=3, 20÷5=4, giving 3:4.
Class 6 IMO Mathematics Olympiad practice · Arithmetic · Ratio, Proportion & Percentages
← All Ratio, Proportion & Percentages questions