We have 25% off coupon for a Christmas tree already marked down to 10% if the original price of the tree is 189 how much will she pay

She will pay $122.85

Step-by-step explanation:

First, find the amount of the percents.

To do that, turn the percents into decimals.

25% - -> 0.25

10% - -> 0.10

Then, multiply each decimal with the original price.

189*0.25 = 47.25

189*0.10 = 18.90

Now that you have the amount of the percents, subtract both from the original price.

189 - (47.25+18.90)

189-66.15 = 122.85