The average age of 8 men is increased by 2 years when two of them whose age are 21 and 23 years replaced by two new men. The average age of the two men is:

30 years

Increase in total age of 8 men=2×8=16 years

Total age of 2 men replaced=21+23=44 years

The total age of the two new men = Increase in total age + age of the 2 men replaced

=16+44=60 years

The average age of the two new men= \(\frac{60}{2}\)=30 years