During a sale, all the items in a shop were sold at a discount of 30%. Carol paid $231 for 3 identical bags. What was the price of a bag before discount?

Sure, here are the steps to solve the problem:

1. First, find out how much Carol paid for one bag. Since she bought 3 identical bags for $231, you divide$231 by 3. This gives you $77. So, Carol paid$77 for one bag after a 30% discount.

2. Now, you need to find out the original price of the bag before the discount. If $77 is 70$77 by 70% (or 0.7 in decimal form).

3. So, $77 divided by 0.7 equals approximately$110. This means that the price of a bag before the discount was approximately $110.