The average age of 7 boys is increased by 1 year when one of tem whose age is replaced by a girl. What is the age of the girl ?
A) 33 yrs
B) 27 yrs
C) 21 yrs
D) 29 yrs
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The average age of 7 boys is increased by 1 year when one of tem whose age is replaced by a girl. What is the age of the girl ?
A) 33 yrs
B) 27 yrs
C) 21 yrs
D) 29 yrs
Answer: C) 21 yrs
A) 33 yrs
B) 27 yrs
C) 21 yrs
D) 29 yrs
Answer: C) 21 yrs
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