The greatest recordbreaking spree in Olympic swimming competition occurred when world records were set in 22 out of 26 events. In one of these events, an East German, Petra Thumer, set a world record in the 400meter freestyle, winning in 4:09.89 (4 minutes 9.89 seconds). Part 1: a. Thumer's time was 1.87 seconds faster than the old record. What was the old record? minutes, seconds Part 2 out of 2 b. Janet Evans of the United States set an Olympic swimming record in the 400meter freestyle with a time of 4:03.85. How much faster was her time than Petra Thumer's Olympic time for this event? seconds