Patricia has 30 roses. She gave 24 roses to her mother. She bought 15 more roses.  How many roses did she have now?
How many roses did Patricia have left after giving 24 roses to her mother? ** Patricia had 30 - 24 = <<30-24=6>>6 roses left after she gave 24 roses to her mother.
How many roses does Patricia have now? ** Therefore, she has 6 + 15 = <<6+15=21>>21 roses now.
#### 21