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​Q14: Question – Paper 1 – June 2018

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Content:

• Part A) Arithmetic Sequences
• Part A: Creating Ratios
• Part B) Finding Unknowns in a Ratio​

Quizzes:​

• Part A) Arithmetic Sequences
• Part A) Creating Ratios
• Part B) Finding Unknowns in a Ratio

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Question

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14)
Patterns are made using straight lines and arcs.
a)

More rows are added to Pattern B so that 

number of straight lines : number of arcs = 10 : 9

​How many rows are added?

[2 marks]

b) A different pattern is made using 20 straight lines and 16 arcs.
The straight lines and arcs are made from metal.

• 20 straight lines cost £12
• cost of one straight line : cost of one arc = 2 : 3

​​Work out the total cost of the metal in the pattern.

[3 marks]

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