The original price of the DVD player purchased by south campus dormitory is $500.
Solution:
Given, South campus dormitory just purchased a new DVD player on sale for $375.
The sale price was 75% of the original price.
We have to find what was the original price Of the DVD player?
Now we know that, sale price = 75% of original price
Substituting the sales price value we get
375 = 75% of original price

Hence, the original price of the DVD player is $500.