question: Indras has 6 letters in her name. Her sister's name has 4 more letters than half of the letters in Indras' name. How many letters are in Indras and her sister's names?
answer: I = <<6=6>>6
  Sister = 6/2 + 4 = <<6/2+4=7>>7
  6 + 7 = <<6+7=13>>13 letters
  Together Indras and her sister have 13 letters in their names.
  #### 13