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The average of 5 different numbers is 24. If the smallest number is 15, what is the average of the remaining four numbers?

1. 27.25
2. 26.25
3. 25.5
4. 24.5

Correct answer: 26.25

Solution

The sum of 5 numbers is \(5\times24=120\). Removing the smallest number 15 leaves \(120-15=105\). The average of the remaining four numbers is \(105/4=26.25\).

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