7.83% of the racers did not complete the race.
Step-by-step explanation:
Given,
Total racers who started = 230
Racers who completed = 212
Racers who gave up = 14
Disqualified racers = 4
Therefore, those who gave up and disqualified could not complete the race.
Racers who did not complete = 14+4 = 18
Percent of racers = 
Percent of racers = 
Percent of racers = 7.826%
Rounding off to nearest whole number
Percent of racers = 7.83%
7.83% of the racers did not complete the race.
Keywords: percentage, addition
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