Bob is six years older than his sister, and the sum of their ages is 32. how old is bob? /search? q=david+is+38+years+old+and+his+son +frank+is+8.+in+how+many+years+will +david+be+twice+as+old+as+frank%3f& amp; rlz=1caleaa_enus642us642& oq=david+is+38+years+old+and+his+so n+frank+is+8.+in+how+many+years+wil l+david+be+twice+as+old+as+frank%3f & aqs=chrome..69i57.410j0j4& sourceid=chrome& es_sm=93& ie=utf-8& safe=active& ssui=on