Mathematics for IGCSE & O level - Ratio And Proportion (Section 3 - No. 28)
A recipe for a cake requires flour, sugar, and butter in a ratio of 5:3:2. If you use 100g of flour, how much butter is needed?
20g
40g
60g
100g
Објашњење
Flour:Sugar:Butter=5:3:2, if 100g flour, 100 is 5*20. Thus, Butter=2*20=40g