Question

Kate paid $27 for a dress that was on sale for 10% off. What was the original price of this dress?

Answer 1

The best way to go about this questions is to write out a formula in which x represents the original price of the dress: x*0.90=27. To see where the 0.90 came from, if Kate's dress was 10% off, she must have paid 90% of the original price (100%-10%=90%). Then, to convert a percentage to a decimal, move the decimal point twice to the left so 90% becomes 0.90. Then, our formula essentially means that 90% of some number (x) is equal to 27. To solve for x, divide both sides of the formula by 0.90 to get x=$30 which is the final answer.

I hope this helps.

Answer 2

Answer:

$30

Step-by-step explanation:

The dress was 10% off, so 100% - 10% = 90%

90% is what percent she paid for the dress.

$27 is 90% the original price.

27/x = 90/100

90x = 2700

x = 30