conversations.from: human
conversations.value: Can you guide me through solving this problem: Nani is 8 years old. His brother is twice his age. Nani's sister is 25% younger than him. What is the total age of all three of the family members?
conversations.from: assistant
conversations.value: Nani's brother is 8 * 2 = 16 years old.
  Nani's sister is 25/100 * 8 = 2 years younger than he is.
  That means she is 8 - 2 = 6 years old.
  In total all mentioned family members, are 16 + 6 + 8 = 30 years old.