Question

Avg ageof 5 persons is 40 the avg of some othwr 10 persons is 25 years the avg age of all the 15 persons is

Answer 1

Answer:

in first case,

average age=40

no of people= 5

sum of these 5 person=40×5=200

in 2nd case,

average age=25

no of people= 10

sum of these 10 person=10×25=250

now ,total sum of all persons=200+250=450

total no of person=5+10=15

average=450/15=30