Answer:
$5.38
Explanation:
What we know:
- The Christmas cards had an original cost that was marked down by 65%
- The final selling price afterwards was $3.50
Let
be equal to the original cost of the Christmas cards.
If
was marked down by 65% to get $3.50, we can write this equation:

To solve for x, we need to first convert 65% into a decimal. To do this, we divide by 100.

Now, our final equation looks like this:


Divide both sides by 0.65 to isolate x

Therefore, the original selling price of the cards was $5.38.
I hope this helps!