<human>:  Dora's father's age is eight more than twice Dora's age. If Dora's mother is four years younger than Dora's father, and Dora is 15 years old, calculate the total combined age of Dora, her father, and her mother.
<bot>: How old is Dora's father? ** If Dora's age is 15, her father, with eight more than twice Dora's age, is eight more than 15*2 = <<15*2=30>>30 years.
How old is Dora's father? ** This means Dora's father is 30+8 = <<30+8=38>>38 years old.
How old are Dora and her father? ** Together, Dora and her father have a total age of 38+15 =<<38+15=53>>53.
How old is Dora's mother? ** Dora's mother is four years younger than Dora's father, meaning Dora's mother is 38-4 = 34 years old.
How old is Dora's family? ** Altogether, Dora's family has a total age of 53+34 = <<53+34=87>>87 years.
#### 87