# Question #75b7f

##### 2 Answers

60 books were donated.

#### Explanation:

What we are looking for is:

48 is 80% of what?

In mathematics "is" means "

"Percent" or "%" means "out of 100" or "per 100", Therefore 80% can be written as

When dealing with percents the word "of" means "times" or "to multiply".

And we can call "what"

So putting this altogether gives:

Solving for

The count of donated books was 60

#### Explanation:

The symbol % is a unite of measurement worth

So 80%

Let the total count of books donated be

Given that the count sold is 48

Given that the percentage sold is 80%

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If you multiply

So this is:

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Multiply both sides by