Best age to do semething

First Category

100

Not young or old (about 40-60)

Middle -aged

200

Old enough to be responsible and make good decisions 

Mature

300

Between 13 and 19

In his teens

400

Between 30 and 39

In her/his thirties

500

Looking and acting old

Elderly

Second Category

100

Older, but acting like a child

Childish

200

Between 40 and 49

In his forties

300

Stopped working full time (Often after 65)

Retired

400

Between 20 and 29

In her twenties

500

Older, but with the energy of a young person

Youthful