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

Solution:

Amount paid by Kate for the dress = $27 (Given)

The offer in the sale = 10% off (Given)

We know that 

100% - 10% = 90%

So $27 is 90% of the original price

It can be written as

27/x = 90/100

Solving for x by cross multiplication

90x = 2700

x = 30

Therefore, $30 is the original price of the dress.

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

Summary:

Kate paid $27 for a dress that was on sale at 10% off. The original price for this dress is $30.