Question

Jenna ordered 28 shirts for her soccer team seventy five percent of those shirts were size large how many large shirts did jenna order

Answer 1

The answer is 21 shirts

Answer 2

Yup, it is 21 shirts that were large. Reason being is so: 

1) You have to set up a proportion in order to solve this equation. You know that there is a total of 28 shirts that Jenna ordered BUT 75% of them were large.

As you also know, percents are ALWAYS over a 100. Using this knowledge, let's set up our proportion: [use x to represent the amount of large shirts she ordered]

x      75
-- = ------
28   100 

2) To solve we will cross multiply! (First do 28 times 75, which gives you 2,100 and 100 times x, which gives you a 100 x).
As a result, you end up with:
100x= 2,100 

3) Now isolate x!!! 
100x=2,100
-----     ------
100      100   DIVIDE into 2,100

x= 21 

4) Your final answer is 21 large shirts!