Question

Luigi cannot decide which store he should buy a TV from. The original price of the TV is $380. Best buy marked down the TV by 50%. Walmart marked down the TV by 30% with an additional 20% off. Which store should Luigi buy from and why?

Answer 1

• Best Buy

,

• Their selling price is lower

Step-by-step explanation:

The original price of the TV = $380.

BestBuy

If Best buy marked down the TV by 50%

Then the selling price of the TV will be:

`\begin{gathered} =380-\mleft(50\mright.\%\text{ of 380)} \\ =380(1-50\%)=380(1-(50)/(100)) \\ =380(1-0.5) \\ =0.5*380 \\ =\$190 \end{gathered}`

The selling price at BestBuy will be $190.

Walmart

Walmart marked down the TV by 30%

`\begin{gathered} =380-\mleft(30\mright.\%\text{ of 380)} \\ =380(1-30\%) \\ =380(1-0.3) \\ =0.7*380 \\ =\$266 \end{gathered}`

There was also an additional 20% off.

`\begin{gathered} =266-\mleft(20\mright.\%\text{ of 266)} \\ =266(1-20\%) \\ =266(1-0.2) \\ =0.8*266 \\ =\$212.80 \end{gathered}`

The selling price at Walmart is $212.80

Therefore, Luigi should buy from BestBuy since they have a lower selling price of $190.