Human: Patricia has 30 roses. She gave 24 roses to her mother. She bought 15 more roses. How many roses did she have now? Assistant: 
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