Can someone help me solve this problem please?

The alterations store on Birch Street charges $13 to hem a pair of jeans and $14 to hem a pair of cuffed pants. The alterations store on Westland Avenue charges $11 to hem a pair of jeans and $16 to hem a pair of cuffed pants. Roxanne has 3 pair of cuffed pants that need hemmed. How many pairs of jeans will she need to get hemmed to make the alterations store on Westland Avenue a better deal than the alterations store on Birch Street?