A college has a library with 1200 books. If 15% of the books are reference books

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Question: A college has a library with 1200 books. If 15% of the books are reference books, how many are not reference books?

Options:

Correct Answer: 1020

Solution:

Number of reference books = 15% of 1200 = 0.15 * 1200 = 180. Books not reference = 1200 - 180 = 1020.

A college has a library with 1200 books. If 15% of the books are reference books, how many are not reference books?

A college has a library with 1200 books. If 15% of the books are reference books, how many are not reference books?

Step 1: Find out how many reference books there are by calculating 15% of the total number of books.
Step 2: To find 15% of 1200, multiply 0.15 by 1200.
Step 3: Calculate 0.15 * 1200, which equals 180. This means there are 180 reference books.
Step 4: To find out how many books are not reference books, subtract the number of reference books from the total number of books.
Step 5: Calculate 1200 - 180, which equals 1020. This means there are 1020 books that are not reference books.

Percentage Calculation – Understanding how to calculate a percentage of a total amount.
Subtraction – Performing subtraction to find the remaining quantity after a portion is removed.