A) 14 years
B) 15 years
C) 16 years
D) 17 years
E) Other than those given as options
Correct Answer: D
Solution :
Average age of the remaining girls \[=\frac{900-(20\times 12+20+16)}{60-20-20}\] \[=\frac{900-(240+320)}{20}=\frac{900-560}{20}\] \[=\frac{340}{20}=17\]yearsYou need to login to perform this action.
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