Presenting age groups
Age groups in Task I ielts

5-12, 13-19, 20-29, 30-39, 40-49,50-59, 60+ (above)
Teens, Under 30s, 40s, 50, 60, 70+
11-18, 20-26, 27-34, 35-45, 46-55, 55 and above

Children in their 5-12 age group
Those in their teens
Youngsters in their 20-30 age group
Those who are in their 40-49 years
The older age groups like 50-59 and 60 and above
People in their middle age like 35-45 years
The age groups 20-29, and 30-39
As people grow older, say, when they are their 50s
While people are younger, say when they are under 30 years
Senior citizens in their 60s and 70s
Students in their teens
children above five and below ten years
Boys in their teens
Girls in their teens
People in their 20s and 30s
Under 30s
Those who are under their 30s
When younger age groups, older age groups like,,,
While males in their 20s………females in the same age groups…..
The corresponding figures of the age group 30-40