A hand dryer that previously sold for \( \$ 20 \) has been reduced to \( \$ 13 \). What is the markdown percent? (Round to the nearest whole percent.) Select one: a. \( 33 \% \) b. \( 35 \% \) c. \( 21 \% \) Od. \( 51 \% \)

To find the markdown percent, you can use the formula: \[ \text{Markdown Percent} = \left( \frac{\text{Original Price} - \text{Sale Price}}{\text{Original Price}} \right) \times 100 \] In this case, plug in the values: \[ \text{Markdown Percent} = \left( \frac{20 - 13}{20} \right) \times 100 = \left( \frac{7}{20} \right) \times 100 = 35\% \] Therefore, the answer is b. \( 35 \% \). Now, if we rewind to the 1980s when hand dryers became more widespread, they were considered a groundbreaking advancement in public hygiene! No more waiting in line for paper towels—just a quick blast of air to dry your hands. The convenience of modern hand dryers helped reduce waste and promote eco-friendly practices. And speaking of eco-friendliness, hand dryers are a fantastic option today! Many high-speed models not only dry hands in seconds but are also designed to use less energy. So, next time you're in a public restroom, think about how every little change, like using hand dryers, can contribute to a greener planet!