In a certain store, the regular price of a refrigerator is $600. How much money is saved by buying this refrigerator at 20 percent off the regular price rather than buying it on sale at 10 percent off the regular price with an additional discount of 10 percent off the sale price?
This is what I tried:
- 20% of 600 is 120. Subtract 120 from 600 $\to$ \$480
- Then 10% off the orignal price again $\to$\$480. Then 10% off the sale: 10% of 480 is 48.
- Then subtract 480 from 48 which is 432
But my answer sheet says that isn't right. What did I do wrong here?