00:01
In this problem, it is said that at a used book sale, 80 books or adult books, 165 are children's books.
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There are 48 nonfiction adult books and 65 nonfiction children's books.
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Now, a book is selected at random.
00:14
Now, first of all, what we need to determine is the probability that the book selected is a fiction book.
00:21
So that is the number of favorable outcomes divided by the total number of outcomes.
00:25
First of all, let us consider the total number of outcomes.
00:27
There's the total number of books at the sale.
00:30
So there are 80 adult books and 165 children's books.
00:34
So if we add these, we will have the total number of books at the sale.
00:38
And the number of favorable outcomes is the number of fiction books.
00:41
Now, there are 80 adult books out of which 48 are nonfiction.
00:45
So 80 minus 48 is the number of fiction books, which are adult books.
00:49
And there are 165 children's books out of which 65 of them are nonfiction.
00:55
So 165 minus 65 is the number of fictional children's books...