conversations.from: human
conversations.value: Can you guide me through solving this problem: Mara has 40 crayons and 10 percent of her crayons are pink. Luna has 50 crayons and 20 percent of them are pink. In total how many pink crayons do Mara and Luna have?
conversations.from: assistant
conversations.value: Mara has 40 x (10 / 100) = 4 pink crayons.
  Luna has 50 x (20 / 100) = 10 pink crayons.
  Together they have 4 + 10 = 14 pink crayons