Question

When I walked into King Soopers yesterday, I noticed that the Colorado Rockies t-shirts had a sign reading “25% off sale!”. If one shirt costs $20.99 with the sale, how much did the shirt cost before the sale?

Answer 1

Given:

The discount is 25%.

The one shirt costs $20.99 with the sale.

To find:

The cost of th shirrt before the sale.

Explanatio:

Let x be the old price of the shirt.

The price of the shirt before the sale is calculated as follows,

`\begin{gathered} (100-25)/(100)* x=20.99 \\ (75)/(100)x=20.99 \\ x=20.99*(100)/(75) \\ =27.9866 \\ \approx\text{ \$}27.99 \end{gathered}`

Final answer:

The cost of the shirt before the sale is $27.99.