It can be useful to express ratios or fraction information in terms of percentages. For example, let's say I have a class of 23 students, and 11 of them earned an A on a test. What percent of the class earned an A?

It is also useful to know how to reverse this process. When given percentage information, we may want to express it as fraction information. For example, if a pair of pants that normally costs $32 is on sale for 20% off, what is the new, actual price? Can you figure this out?

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