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​Q11: Answers – Paper 3 – June 2018

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Content:

• Part A) Sharing Through a Ratio
• Part B) Finding Unknowns in a Ratio
• Part B) Recipe Questions​

Quizzes:

• Part A) Sharing Through a Ratio
• Part B) Finding Unknowns in a Ratio
• Part B) Recipe Questions

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Mark Scheme

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Working
A recipe for flapjacks uses only oats, butter and syrup, in the ratio 3 : 2 : 1.

a) Pirin makes 1.5kg of flapjacks.
He uses 600g of butter.

Has Pirin followed this recipe?
​Show how you decide.

b) Using this recipe, 200g of syrup are needed to make 10 flapjacks.
Find the mass of oats needed to make 15 of these flapjacks.

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Question

11) A recipe for flapjacks uses only oats, butter and syrup, in the ratio 3 : 2 : 1.

a) Pirin makes 1.5kg of flapjacks.
He uses 600g of butter.

Has Pirin followed this recipe?
​Show how you decide.

[4 marks]​

b) Using this recipe, 200g of syrup are needed to make 10 flapjacks.
Find the mass of oats needed to make 15 of these flapjacks.

[3 marks]​

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