During the month of february, fabulous feet shoe mart sold 30 pairs of red loafers. after an ad campaign to boost sales, they sold 39 pairs in march. find the percent of increase in sales. 35% 30% 23% 18%

30

Hello! First off, we subtract the old value from the new value, and we have a change of 9 pairs of shoes. Then, we do 9/30 to get 0.3 and then multiply by 100 to get 30. The percent increase of sales is 30%. The answer is B: 30%.