Carol did not work 1/14 of the days. 1/14*28/1= 28/14=2 days she did not work Carol worked at the bookstore 1/4 of the days 1/4*28/1= 28/4= 7 days at the bookstore 28-7-2= 19 days that she worked at the restaurant Final answer: B
Work: 1/4 of 28 = 7 days (bookstore) 1/14 of 28 = 2 days (did not work) 28 - 7 = 21 days 21 - 2 = 19 days (restaurant) Therefore, Carole worked 19 days at the restaurant.