Mathematics · Averages
In a class, the average age of 28 boys is 13 years. Two boys whose ages are 'x' years and 21 years leave the class. If the new average age of the remaining boys in the class is still 13 years, then what is the value of 'x'?
- 17
- 25✓
- 310
- 413
Correct answer
5
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