callie is invited 10 freinds to a party If each freind will get 6 cookie and each box has 10 cookieshow many boxes does callie need

Explanation:

zoom I'd - 9038735228 pwd -97cEeT join me for talk...I m feeling bored

A.) Their

Their sister is happy to babysit, so you mustn't worry about it.

Their is the 3rd person plural adjective. It is used to describe something or someone that belongs to them.

They're is a contraction of "they are" and it is most often followed by a present participle or a verb that ends with -ing.