Number of shirts (linen and cotton) sold by store D is what percent more than the number of linen shirts sold by store B

What is the central angle corresponding to the number of shirts (linen and cotton) sold by store E

Total number of cotton shirts sold by stores A and B together is what percent of the number of shirts (linen and cotton) sold by store E

What is the respective ratio between number of shirts (linen and cotton) sold by store C and number of linen shirts sold by store F

What is the difference between average number of linen shirts sold by stores D and E together and average number of cotton shirts sold by the same stores together

In a class of 80 students and 5 teachers, each student got sweets that are 15% of the total number of students and each teacher got sweets, that are 25% of the total number of students. How many sweets were there