Applications of Negative Numbers in Real Life
Applications of Negative Numbers in Real Life
TGM Original Questions
In a class quiz, the average time taken by seven candidates to complete the quiz is 1 hour and 17 minutes. The table below shows the difference between the time taken by each candidate and the average time.
| Candidates | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| Difference (minutes) | -8 | 2 | -3 | -11 | \(x\) | 5 | 13 |
Find
- the value of \(x\),
- the difference between the greatest and smallest time taken to complete the quiz,
- the average time taken to complete the quiz by candidate \(C\), \(D\) and \(G\).
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Answer:(a) \(x=2\) (b) \(24\) minutes (c) \(76\frac{2}{3}\) minutes
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