Mathematics for IGCSE & O level - Ratio And Proportion (Section 4 - No. 4)
A recipe calls for orange juice and grapefruit juice in the ratio 2:3. If you want to make 1 litre of the drink, how much orange juice do you need, in millilitres?
200 ml
400 ml
500 ml
600 ml
Explanation
The total ratio parts are 2 + 3 = 5. Orange juice is 2/5 of the total, so (2/5) * 1000 ml = 400 ml.
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