280 to 290
9
depends on the appetite of the 9 year old
107
about 24.
9 years old. A 9 year old on his birthday is approximately 3,288 days old.
None. The caffeine and sugars are too high for a 9 year old.
none
about 9 depending on what they do and what their grades are.
25kg
Since there are 86,400 seconds in a day and 365.25 days in a year, a 9-year old has lived at least 284,018,400 seconds.
In Canada I don't think that there is really a legal age to babysit. It is up to the parents. I know many 13 year old people that babysit 9 year old children and it has turned out fine. But it also depends on the child who is babysitting. If the parents feel that he or she is responsible enough, there should be no problem with them babysitting a 9 year old.
if you want to. its not illegal