The average of the ages of a group of 65 men is 32 years. If 5 men join the group, the average of the ages of 70 men is 34 years. Then the average of the ages of those 5 men joined later (in year) is :

60

Sum of age of newly added 5 men = 70 × 34 - 65 × 32

= 2380 - 2080

= 300

Average age of newly added 5 men = \(\frac{300}{5}\)

= 60