The $200 dryer was on sale for $180. What was the percent of discount?

1%

10%

11%

1.1%

11%

To calculate the percent of discount, you would subtract the sale price from the original price, then divide that difference by the original price and multiply by 100.

($200 - $180) / $200 * 100 = 10 / 200 * 100 = 5%

Therefore, the percent discount is 10%.