Answer:
around 5 miles per hour
Step-by-step explanation:
Number of shirts a department store bought = 200
Cost price of 200 shirts = $5400
Cost price of 1 shirt :


Thus, the cost price of one shirt = $27
Price at which the department store sold each shirt = $30
Which means :
▪︎Cost price of shirt = $27
▪︎Selling price of shrit = $30
Since selling price is greater than cost price, there was a markup in the price of the shirts.
We know that :

Markup percentage in the price of the shirts :





Thus, the percentage of markup = 
Therefore, the percentage of markup in the shirt's price = 
Length × Width = Area
-5*Width = 36
Simply divide 36 by 5 to get your answer
Hope that helps!!!!
Arrange in ascending order:-
6 7 11 13 14 15 15 19 21
median = 14
lower quartile = mean of 7 and 11 = 9
upper quatile = mean of 15 and 19 = 17
Interquartile range = 17 - 9 = 8
answer is 8