# RE2 | openai/gpt-5.4-mini | run 2

## Prompt

After a 20% discount, a jacket costs $40. What was the original price? Show your work.

## Response

After a 20% discount, the jacket costs 80% of its original price. So we solve \(0.8x = 40\).

## Work

\[
0.8x = 40
\]

\[
x = \frac{40}{0.8}
\]

\[
x = 50
\]

## Answer

The original price was **$50**.

Would you like me to show a quick mental-math shortcut for these discount problems?
