A customer who purchased an item that had been discounted by 10% and then discounted again by another 10% saved what percent of the original price.

Question

I thought it was 20%, but it seems like it is not. Please help. Thank you!

Answer 1

To Anna:  To get 20%, you are taking the percent of the original price both times, but the second 10% discount is based on the first discounted price (not the original price).

Answer 2

p = original price

0.9p = price after first discount

(0.9)(0.9)p = price after second discount

0.81p = price after second discount

 

0.19c = amount of discounts

19% = amount of discounts