Final answer:
The discount on the television results in a 25% decrease from the original price, not 22.2%. The correct answer choice would simply be 25%, Decrease.
Step-by-step explanation:
The question is asking to calculate the percentage decrease in price of a television after a 25% discount is applied to its original price of $400. To find the discount amount, multiply the original price by the discount percentage in decimal form, which in this case is 0.25 (25%): $400 x 0.25 = $100. This discount is subtracted from the original price to get the sale price: $400 - $100 = $300. Since the question asks for the change in percentage, it is unnecessary to calculate the final sale price here. Instead, we note that a reduction from the original price represents a decrease, not an increase.
The correct choice is (b) 22.2%, Decrease, which is misleading as the actual percentage decrease is exactly 25%. The answer provided in the student's question choices appears to be incorrect, as the precise calculation for the discount gives a 25% decrease, not 22.2%.