Anita has two sisters and three brothers. The mean of all their ages is 6 years. What will their mean age be 10 years from now? Twenty years from now?
1 Answer
Apr 12, 2018
10 years from now, it will be 16
20 years from now, it will be 26
Explanation:
Right now, their ages are:
In
IOW,

10 years from now, ave age will be 16

20 years from now, ave age will be 26