Brittney found a swimsuit that she wanted to buy with a price tag marked $80. The sign above it indicated that this price was 20% off. What was the original price of the swimsuit?
To find the original price of the swimsuit, we need to undo the 20% discount that was applied.
Step 1: Convert the discount percentage to a decimal by dividing it by 100. In this case, 20 divided by 100 equals 0.20.
Step 2: Subtract the discount percentage (0.20) from 1 to find the fraction representing the original price. 1 - 0.20 equals 0.80.
Step 3: Divide the sale price ($80) by the fraction representing the original price (0.80) to find the actual/original price of the swimsuit.
$80 ÷ 0.80 equals $100.
Therefore, the original price of the swimsuit was $100.
0.8x = 80
Solve for x.