Hasan plans to choose a book from a section of the store where everything is 25% off. He writes the expression d – 0.25d to find the sale price of the book if the original price is d dollars.
Bella correctly writes another expression, 0.75d, that will also find the sale price of the book if the original price is d dollars.
Use the drop-down menus to explain what each part of Hasan’s and Bella’s expressions mean.
Hasan’s Expression: d – 0.25d
d:
0.25:
0.25d:
d – 0.25d:
Bella’s Expression: 0.75d
0.75:
d:
Let’s break down both expressions:
Hasan’s Expression: d – 0.25d
– d: This represents the original price of the book in dollars.
– 0.25: This is the decimal equivalent of 25%, indicating the portion of the price that is deducted (discount).
– 0.25d: This represents the amount of the discount in dollars (25% of the original price).
– d – 0.25d: This represents the sale price of the book after subtracting the discount from the original price.
Bella’s Expression: 0.75d
– 0.75: This represents the remaining percentage of the price after the discount (100% – 25% = 75%).
– d: Again, this represents the original price of the book in dollars.
Short Explanation: Both expressions calculate the final sale price of the book after applying a 25% discount. Hasan’s expression shows the original price minus the discount, while Bella’s expression uses the reduced rate directly to find the sale price. Would you like to explore this further?