Question

The average age of 10 children in a group is 15. If two people aged 20 and 22 join the group, what will be the new average age of the group?

• A. 15.5
• B. 16
• C. 16.5
• D. 17

Answer 1

Answer:

B. 16

Total age of 10 children = 15x10=150 When there are 12 children, total age = 150+ (20+22) = 150+ 42 = 192 Average = 192/12 = 16