Mathematics for IGCSE & O level - Ratio And Proportion (Section 6 - No. 38)
A recipe requires flour and butter in a ratio of 3:2. If you use 150g of flour, how much butter do you need?
50 g
75 g
100 g
225 g
Forklaring
If 3 parts = 150g then 1 part = 50g. Hence butter = 2 parts = 2*50 = 100g.