How to books make up 0.3 of the books In the school library. Of these , 0.2 deal with carpentry and 0.4 deal with electronics
To calculate the number of books in the school library that deal with carpentry, we can multiply the total number of books by the proportion of carpentry books: 0.3 * 0.2 = 0.06.
Therefore, 0.06 of the books in the school library deal with carpentry.
Similarly, to calculate the number of books that deal with electronics: 0.3 * 0.4 = 0.12.
So, 0.12 of the books in the school library deal with electronics.
To find the proportion of books dealing with carpentry and electronics in the school library, follow these steps:
Step 1: Determine the proportion of "how-to" books out of all the books in the library.
Let's assume there are 100 books in the library. If "how-to" books make up 0.3 of the library, then there are 0.3 * 100 = 30 "how-to" books.
Step 2: Calculate the number of books dealing with carpentry.
If 0.2 of the "how-to" books are about carpentry, then there are 0.2 * 30 = 6 books dealing with carpentry.
Step 3: Calculate the number of books dealing with electronics.
If 0.4 of the "how-to" books are about electronics, then there are 0.4 * 30 = 12 books dealing with electronics.
So, out of the 100 books in the library:
- 30 books are "how-to" books.
- 6 books deal with carpentry.
- 12 books deal with electronics.