Question

Janet's Junk Shop is having its annual sale. Matt wants to buy a mixer that originally sold for $28.62 and is now on sale for off. Matt also has a coupon for an additional 15% off the discounted price.
How much will Matt pay for the mixer?

Answer 1

$n\% \:\:off = (100 -n)\% \:\: of \:the\: original \:price$
$FinalPrice =$
$(Original Price \times(\frac{100\% - Discount}{100\%}))\times(\frac{100\% - Discount_2}{100\%}) =$
$\big(\ 28.62\times(\frac{100\% - 25\%}{100\%})\big) \times(\frac{100\% - 15\%}{100\%}) =$
$\big(\ 28.62\times(\frac{3}{4})\big) \times(\frac{17}{20}) \approx \ 18.25$

Matt will pay $\ 18.25$ for the mixer