Answer:
it depends
Explanation:
it depends how much the shirt costs, if the shirt is $30 it is cheaper to do the 20% off because 20% x 30= 6 so your total would be $6; if you take $20 off of $30 you have to pay ten dollars. but if the shirt is $25 you would be paying $5 either way, 25% x 25= 5 ($5) 25 - 20=5 ($5).