The average age of 120 students in a group is 13.56 years. 35% of the number of students are girls and the rest are boys. If the ratio of the average age of boys and girls is 6 : 5, then what is the average age (in years) of the girls?
A. 14.4
B. 10
C. 11.6
D. 12
Answer: Option B
This Question Belongs to Arithmetic Ability >> Average
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