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​Q11: Answers – Paper 3 – June 2019

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Content:

• Mean - Finding
• Ratio – Finding Unknowns
• Mean – Working Backwards​

Quizzes:

• Mean – Finding
• Ratio – Finding Unknowns
• Mean – Working Backwards

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Mark Scheme

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Working
​Here are two sets of numbers, A and B.

mean of Set A : mean of Set B = 3 : 8

​​Work out the value of x.

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Question

11) Here are two sets of numbers, A and B.

mean of Set A : mean of Set B = 3 : 8

​​Work out the value of x.

[4 marks]

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