Jacket on sale
A jacket normally costs $80. This week it is 15% off. How much does the jacket cost this week?
Asked: how much does it cost this week (dollars). Is a: Find a percent of a number. Answer: $68.
| Phrase | Value | Counts | Needed? |
|---|---|---|---|
| “costs $80” | 80 dollars | original price | yes |
| “15% off” | 15 percent | discount | yes |
| Decision | Concept | Correct | Traps → wrong answer |
|---|---|---|---|
| What kind of question is this? | Recognize the question type | 15% of the price comes off: a percent of a number | $15 comes off → 65 |
| What does the question ask for? | Name the unknown | The new price | The savings → 12 |
The graph starts at the story. The Extract frame holds the decisions; red dashed arrows leave a decision for each trap and run to the wrong answer it produces. The thick green arrow carries the extracted numbers into the question, drawn exactly as on the question’s own page. Any follow-up step comes after, then the answer in the story’s terms. The legend is at the bottom.
| Trap | Mistake | Leads to | Caught by the answer? | Gives itself away with |
|---|---|---|---|---|
| Recognize the question type | Takes off $15 instead of 15%. | 65 | yes | 80 − 15 = 65 |
| Name the unknown | Answers the savings instead of the new price. | 12 | yes | — |