<human>:  Josiah is three times as old as Hans. Hans is 15 years old now. In three years, what is the sum of the ages of Josiah and Hans?
<bot>: How old is Josiah now? ** Josiah is 15 x 3 = <<15*3=45>>45 years old now.
How old will Josiah be in three years? ** In three years, Josiah will be 45 + 3 = <<45+3=48>>48 years old.
How old will Hans be in three years? ** Hans will be 15 + 3 = <<15+3=18>>18 years old in three years.
What is the sum of the ages of Josiah and Hans in three years? ** So, the sum of their ages in three years is 48 + 18 = <<48+18=66>>66 years old.
#### 66