Answer:
The sale price of the game is $ 22.5
Step-by-step explanation:
Given : A board game that normally costs $30 is on sale for 25 percent off.
We have to determine the sale price of the game.
We first find the discount percentage on the game.
25% of original cost
that is 
Thus,
Sale price = Original value - discount price
Sale price = 30 - 7.5
Sale price = 22.5
Thus, The sale price of the game is $ 22.5