Respuesta :

Vinnyelsmartdonkeyy

Answer:

$8

Step-by-step explanation:

To find 10% of a number, move the decimal point over by one. Since the number is a whole the decimal point looks like this    

$40.00

Move it once to get 10% which is 4. Then multiply it by 2 to get 20%.
If the shirt was bought at $40 when it was 20% off then the original should be $50