human
Janet has 9 cards more than Brenda. Mara has twice as many cards as Janet. How many cards do they have in all if Mara has 40 cards less than 150?
assistant
How many cards does Mara have? ** Mara has 150 - 40 = <<150-40=110>>110 cards.
How many cards does Janet have? ** Janet has 110/2 = <<110/2=55>>55 cards since Mara has twice as many as Janet.
How many cards does Brenda have? ** Brenda has 55 - 9 = <<55-9=46>>46 cards since Janet has 9 cards more than Brenda.
How many cards do Janet, Mara, and Brenda have in all? ** Therefore, they all have 110 + 55 + 46 = <<110+55+46=211>>211 cards.
#### 211