Edexcel Gcse Mathematics (Linear) - Direct & Inverse Proportionality Page 8

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10.
r is inversely proportional to t.
r = 12 when t = 0.2
Calculate the value of r when t = 4.
……………………………
(Total 3 marks)
11.
f is inversely proportional to d.
When d = 50, f = 256
Find the value of f when d = 80
f = ..................................
(Total 3 marks)

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