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:
Sure! Let’s break down both expressions step-by-step.
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%, which represents the discount given on the original price.
– 0.25d: This is the amount of the discount, calculated by multiplying the original price (d) by 0.25.
– d – 0.25d: This is the sale price of the book after applying the discount, which subtracts the discount from the original price.
Bella’s Expression: 0.75d
– 0.75: This represents the remaining percentage of the price after the 25% discount has been applied (100% – 25% = 75%, or 0.75 in decimal form).
– d: This is the original price of the book in dollars.
Bella’s expression directly calculates the sale price by taking 75% of the original price, which is equivalent to Hasan’s method of subtracting the discount. Both expressions end up giving the same result, just approached differently! Would you like to explore more about discounts or another math topic?
Let’s break down each part of Hasan’s and Bella’s expressions:
Hasan’s Expression: d – 0.25d
– d: This represents the original price of the book in dollars.
– 0.25: This represents the percentage discount (25%) expressed as a decimal.
– 0.25d: This is the amount of the discount in dollars, calculated as 25% of the original price.
– d – 0.25d: This represents the final sale price of the book after the discount is applied, calculated by subtracting the discount from the original price.
Bella’s Expression: 0.75d
– 0.75: This represents the remaining percentage of the original price after applying the 25% discount (100% – 25% = 75%, expressed as a decimal).
– d: This again represents the original price of the book in dollars.
Both expressions yield the same sale price, just calculated in slightly different ways. If you have any more questions or need help with another topic, feel free to ask!