Dave runs a 10km race and beats his best time by 5%. His best time was 60 minutes.
How long did it take him to complete the race?

Plz help plz give me the answer

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?