The regular price of a keyboard price is $845 and the sale price is $695. What is the percent of discount to the nearest whole percent?
The question is asking for the percent discount. The discount is what isn't counted in the full price, hence 845-695 which equals $150.
Now the discounted percent would be the discount over the original price, which will be 0.1775.
To convert that to a percent, you multiply that by 100, giving you 17.75%.
It asks for the percentage in a whole number, so rounding up would give you 18%.