Mathematics (AS & A Level) · May / June 2017 · Paper 61 · Question 4
9709
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The question as text
The times taken, t seconds, by 1140 people to solve a puzzle are summarised in the table. Time (t seconds) 0 ≤t < 20 20 ≤t < 40 40 ≤t < 60 60 ≤t < 100 100 ≤t < 140 Number of people 320 280 220 220 100
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4(i)[4]
4(ii)[2]
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