average age of 20 men is 50yr.5 new men,whose average age is 40yr,join them.find average age of all men?

Answer 1

If the average of the original 20 men is 50 years, what is the total sum of their ages?
What is the total sum of the new 5 men ?

Find the total sum of the ages of the 25 men, which will lead you to the average age of all of them.