Winona and Takoda are shopping for a present for their mother. The chart shows
several possible presents. There is no sales tax in the state where they live.
Present Cost ($) Discount (%) Total Paid
Power tools d 15%
Water skis d + 15 25%
Jewelry d – 5 10%
a. Write two expressions in terms of d to show how much Winona and Takoda
would pay in total if they buy their mother the set of power tools
Expression 1: (1 - 0.15)d
Expression 2: d - 0.15d
Both expressions represent the total amount paid by Winona and Takoda for the set of power tools.
What does the expression 0.90(d – 5) refer to? How do you know? How else
could this expression be written?
The expression 0.90(d - 5) refers to the total price paid for the jewelry after a 5% discount.
The discount is applied by subtracting 5 from the original price, represented by (d - 5).
The expression could also be written as 0.90d - 0.90(5) or 0.90d - 4.50.
To calculate the total amount Winona and Takoda would pay for the set of power tools, we need to apply the given discount of 15%.
The original cost of the power tools is 'd' dollars.
Expression 1: To find the discounted amount, we can multiply the original cost by (100% - discount percentage):
Total Paid = d * (100% - 15%)
Expression 2: Simplifying the expression:
Total Paid = d * 85%
Therefore, the two expressions to show how much Winona and Takoda would pay in total for the set of power tools are:
1. Total Paid = d * (100% - 15%)
2. Total Paid = d * 85%