IMO Practice Test — Ratio & Proportion

6 Questions • 25 min • Olympiad level

25:00
Question 1 of 6 hard
A recipe uses flour:sugar = 2:1. For 4 cups of flour, how much sugar?
1 cup
2 cups
3 cups
4 cups
Explanation: Flour doubled (2→4), so sugar doubles (1→2).