mention the ages of your any 10 relatives . Find the average age of these 10 relatives .If the average age?

Question

of your 2 teachers is 55 years. also find the average age of all these 12 people.

Answer 1

I have the following ten relatives' age........
40
42
44
49
50
52
55
72
78
80

.........the total of which figures comes to 562 years. The total age of two teachers comes to.....55x2=110 years
Now, the total age of twelve persons comes to....562+110=672 years
Therefore , the average age of all these twelve persons is .................... 672/12=56 years.

Answer 2

The following ages are from 10 of my relatives: 29, 7, 51, 14,16, 25, 25, 45, 73, 77 = 392
The two teachers: 55 x 2 = 110
392 + 110 = 502
502 / 12 = 41.8 = 42 rounded up.