# The original price of a sweater is $36. The sale price is 85% of the original price. What is the sale price of the sweater?

We can do this a couple of ways. First I'll do it by finding the discount and subtracting it from the original price:

And so the sale price is $5.40.

We can work this problem a different way - if we don't care about the amount of the discount and only want the sale price, we can think about the problem this way: if the sweater's original price is $36 and so that is 100% of the price and it's 85% off, only 15% of the price is left, so we can write:

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The sale price of the sweater is $30.60.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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