Mathematics for IGCSE & O level - Ratio And Proportion (Section 4 - No. 48)
A recipe for lemonade requires lemon juice and water in the ratio 1:5. If 50 ml of lemon juice is used, how much water is needed?
10 ml
100 ml
250 ml
300 ml
설명
If 1 part = 50 ml, 5 parts is 5*50 = 250ml