The average age of 25 girls in a class decreases by 6 months when a – McqOptions

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1.	The average age of 25 girls in a class decreases by 6 months when a new girl takes the place of 20 year old girl. Find out the age of the new girl.
A.	5.5 years
B.	7.5 years
C.	9.5 years
D.	13.5 years
Answer» C. 9.5 years

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