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1. |
In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 18 years is replaced by a new boy. The age of the new boy is ? |
A. | 12 years 8 month |
B. | 14 years 8 month |
C. | 16 years 8 month |
D. | 18 years 8 month |
Answer» C. 16 years 8 month | |