There are two ways find a sale price.

First convert the %s to decimals. Then:

1) You can find the % off and subtract it from the original price.

$400 X 0.2 and then subtract that amount from $400

2) Or you can subtract the % off from 100% and multiple that times the original price.

(100% - 20%) = 0.8 x $400

Then you have the additional problem of another discount.

You can calculate the price after 20% off and then take 30% off of that.

Multiplication is the same no matter what order you do in it.

So you can do the 20% first then 30%, or you can do the 30% first.

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