conversations.from: human
conversations.value: Can you provide an in-depth solution for: Betty is 60 years old, and she is the oldest person in the family. Her daughter is 40 percent younger than she is, and her granddaughter is one-third her mother's age. How old is the granddaughter?Hey there, could you help me solve this math problem: Betty is 60 years old, and she is the oldest person in the family. Her daughter is 40 percent younger than she is, and her granddaughter is one-third her mother's age. How old is the granddaughter?
conversations.from: assistant
conversations.value: Betty's daughter is 40/100 * 60 = 24 years younger than she is.
  That means her daughter is 60 - 24 = 36 years old.
  So the granddaughter is 1/3 * 36 = 12 years old.