U. S. new home sales jumped 7. 1% in August, as low mortgage rates pull buyers into the housing market. The Commerce Department said Wednesday that new homes sales increased to a seasonally adjusted annual rate of 713,000, up from a revised 666,000 in July. So far this year, sales have risen a healthy 6. 4%. Trade tensions and slower economic growth have pushed down interest rates, helping homebuyers for the moment.