Given:
The original price of the computer, CP = $900.
The discount rat offered on all computers, R=10%
Kalesha has a $100 gift card.
The discount is applied on the original price of the computer. So, Kalesha should first take 10% off and then only subtract $100 from it.
Therefore, the answer is " Take 10% off, then subtract $100.
The discount amount for the computer is calculated as,
[tex]\begin{gathered} D=\frac{R}{100}\times CP \\ =\frac{10}{100}\times900 \\ =90 \end{gathered}[/tex]
Now, the amount after taking 10% off is,
[tex]\begin{gathered} A=CP-D \\ =900-90 \\ =810 \end{gathered}[/tex]
There is a $100gift card. So, the final amount that Kalesha should pay can be calculated as,
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