Mathematics for IGCSE & O level - Ratio And Proportion (Section 5 - No. 34)
A painter mixes blue and yellow paint in the ratio 3:2. If the painter uses 6 liters of blue paint, how much yellow paint is used?
2 liters
3 liters
4 liters
9 liters
คำอธิบาย
3 parts = 6 liters, thus 1 part = 2 liters. Therefore, 2 parts is 2 * 2 = 4 liters