1. Work backward through a price change
A jacket is discounted by 20%. A $12 voucher is then applied, leaving $60 to pay. What was the original price?
- A:$75
- B:$84
- C:$90
- D:$96
- E:$87
Show answer and method
Answer: C — $90.
Before the voucher, the discounted price was $60 + $12 = $72. A 20% discount leaves 80% of the original price, so the original was $72 ÷ 0.8 = $90.
Undo the changes in reverse order: add back the voucher, then divide by the remaining percentage.