Question

The average age in a city of 10.000
The average of half of
them is so
years. The average of
13 40
years. The
gamaine
ones is,​

Answer 1

Answer:

sum of ages of 10000 ppl=10000×40=400000

half of 10000 ppl=5000 ppl

sum of 5000 people=5000×15=75000 so,

sum of remaining once=400000-75000=325000