NATIONAL MUTUAL CUTS AUSTRALIAN PRIME TO 17.75 PCT
  National Mutual Royal Bank Ltd said
  it would cut its prime rate to 17.75 pct from 18.25, effective
  April 27.
      The cut follows a trend toward lower rates started last
  month and accelerated by Westpac Banking Corp, which yesterday
  cut its prime to 17.50 pct from 18.25 pct. Westpac's 17.50 pct
  is the lowest prevailing rate.