Question

A computer store buys a computer system at a cost $487.20. The selling price was first at $812, but then the store advertised a 30% markdown on the system. find the current sale price?

Answer 1

Answer:

The current sale price is;

$\text{\ }568.4$

Explanation:

Given that the selling price was first at $812.

Then the store advertised a 30% markdown on the system.

the markdown percent can be expressed as;

$\begin{gathered} \text{\%}P=\frac{\Delta S}{S}\times100\text{\%} \\ \text{\%}P=mark\text{ up percent} \\ S=\text{ initial selling price} \\ \Delta S=amount\text{ reduction in selling price} \end{gathered}$

given;

$\begin{gathered} \text{\%}P=30\text{\%} \\ S=\text{ \ 812} \\ \text{substituting;} \\ 30\text{\%}=\frac{\Delta S}{812}\times100\text{\%} \\ \Delta S=\frac{812\times30\text{\%}}{100\text{\%}} \\ \Delta S=\text{ \ 243.6} \end{gathered}$

So, the current selling price will be;

$\begin{gathered} S_N=S-\Delta S \\ S_N=\text{ \ 812}-\text{ \ 243.6} \\ S_N=\text{ \ }568.4 \end{gathered}$

The current sale price is;

$\text{\ }568.4$