A) 15 years
B) 17 years
C) 18 years
D) 19 years
Correct Answer: D
Solution :
The average age of remaining 14 students \[=\frac{35\times 16-21\times 14}{14}\] \[=\frac{560-294}{14}\] \[=\frac{266}{14}\] = 19 years
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