| Exam Board | AQA |
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| Module | D2 (Decision Mathematics 2) |
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| Year | 2014 |
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| Session | June |
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| Topic | Matchings and Allocation |
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7 The table shows the times taken, in minutes, by four people, \(A , B , C\) and \(D\), to carry out the tasks \(W , X , Y\) and \(Z\).
Some of the times are subject to the same delay of \(x\) minutes, where \(4 < x < 11\).