Ratio, SM-Bank 036

Milly is using this cupcake recipe.

How many cups of sugar are needed for 20 cupcakes? (2 marks)

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\(3\dfrac{3}{4}\ \text{cups}\)

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\(\text{From the recipe:}\)

\(\dfrac{3}{4}\ \text{cups} = 4\ \text{cupcakes}\)

\(\therefore\ \text{Sugar in 20 cupcakes}\)	\(=\dfrac{3}{4}\times 5\)
	\(=\dfrac{15}{4}\)
	\(=3\dfrac{3}{4}\ \text{cups}\)