Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 39)
A recipe for cookies calls for flour and sugar in a ratio of 3:2. You need to make a larger batch using 18 cups of flour. How much sugar will you need?
9 cups
12 cups
24 cups
27 cups
Explanation
The flour ratio is 3, and if we have 18 cups, then we multiplied the flour by 6. Thus sugar (ratio 2) will be 2*6 = 12 cups.
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