Question

Best Buy is having a sale on All television. TV You want costs $500.00 but is on sale for 30% off.Discount = Total cost = ____ - ____ =

Answer 1

To calculate the discount we can use a rule of 3 so:

`\begin{gathered} 500\to100 \\ x\to30 \end{gathered}`

so the equation:

`\begin{gathered} x=(500\cdot30)/(100) \\ x=150 \end{gathered}`

So the total cost will be:

`T=500-150=350`