use good grammar.
He is very keen
Just be yourself and write what you think.
Yes a 12 year old can own his/her own business.
A fourteen year old cannot start their own business. You have to be at least 18 years old before you can start a business.
A 12 year old in most places can work for a family owned business.
no it can't have a business.
"Twelve-year-old" is the correct way to write the age of a twelve-year-old individual. The phrase should be hyphenated when used as an adjective before a noun.
A 14 year old cannot start their own business. In order to start a business you have to be at least 18 years old.
Basically, they can't. All of the things needed to set up a business, a 10 year old either can't or won't get or do.
depends where and what business
With parental consent a 16 year old can start just about any business. Be prepared as a 16 year old for your parents to sign forms for you, read contracts, and handle your money.