Confusing percentage question 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?

You calculated correctly the savings for the first alternative. If we take $20\%$ off the regular price, we save $120$.
Now we need to make an entirely separate calculation for the second alternative. Take $10\%$ off the regular price. That saves us $60$, and brings us to $540$. Then take $10$ percent off that. That brings us to $540-54=486$. Our total savings are $60+54=114$.
So in the first case we save $120$, in the second case we save $114$, for a difference of $6$ dollars.
