Mathematics
Grade10
Easy
Question
A music store is running the following promotions.
use the composition of function to find the sales price of a $ 90 purchase when 15% discount is applied prior to the discount of $ 5.
- $ 71.50
- $ 81.50
- $ 97.75
- $ 72.25
The correct answer is: $ 71.50
To find the sales price of a $ 90 purchase when 15% discount is applied prior to the discount of $ 5.
Given the total purchase price of $ 90.
15% discount ⇒ $ 90 – 15% of $ 90 = $ 90 – $ 13.5 = $ 76.5
Then $ 5 off ⇒ $ 76.5 - $ 5 = $ 71.5
the sales price of a $ 90 purchase when 15% discount is applied prior to the discount of $ 5 is $ 71.5.
