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? Assistant:
Josiah is 15 x 3 = 45 years old now.
In three years, Josiah will be 45 + 3 = 48 years old.
Hans will be 15 + 3 = 18 years old in three years.
So, the sum of their ages in three years is 48 + 18 = 66 years old.