NEW YORK: Interest rates on US 30-year mortgages were unchanged in the latest week as benchmark Treasury yields have held in a tight trading range in advance of a speech from Federal Reserve Chair Janet Yellen on Friday, mortgage finance agency Freddie Mac said on Thursday.

The average 30-year mortgage rate was 3.43 percent in the week ended Aug. 25 for a second straight week, Freddie Mac said in its latest mortgage rate survey.

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