The table shows the amount of money Jamie spent at a restaurant for the first three weeks.
Week Amount spent ($) 1 36 2 39 3 37 4 ?
Jamie will get a free meal if the average amount of money he spent for three of the four weeks is $40 or more. What is the smallest amount Jamie must spend in Week 4 to receive the free meal?
Ans : ___
| Week | Amount spent ($) |
|---|---|
| 1 | 36 |
| 2 | 39 |
| 3 | 37 |
| 4 | ? |
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Worked solution
3
1. Calculate the minimum total amount needed for three weeks to achieve an average of $40
2. Identify the two weeks with the highest spending to minimize the required spending in Week 4
The highest spending amounts in the first three weeks are (Week 2) and (Week 3).
3. Calculate the smallest amount needed in Week 4
Answer
$44
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