The average age of 10 children in a class is 12 years. Lf two children aged 14 year & 16 year join the class it will raise the average age how much?
A. 2 months
B. 4 months
C. 6 months
D. 8 months
Answer:C
The average age of 10 children in a class is 12 years. Lf two children aged 14 year & 16 year join the class it will raise the average age how much?
A. 2 months B. 4 months C. 6 months D. 8 months