In the library there were 12% Hindi books, 20% Telugu books, 40% English books and 8% French books out of a total of 800 books. The number of French books is:

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160

640

answer is B.

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Detailed Solution

Concept- This is a percentage question, and it includes percentages for many language books. We need to determine how many French books there are such that there are 800 total books and 8 percent of those books are in French. We now need to determine the solution to the following formula, which is

, or

, which equals 64. No percentages of other novels are mentioned in any way.
Simply by looking at the data, we can deduce that we must answer the question using percentages. We are provided the percentages of books in various languages, including Hindi (12%), Telugu (20%), English (40%) and French (8%), as well as the overall number of books, which is 800.
The meaning of percentage is that initially we are given the actual quantity of some particular type of objects of our interest and it is out of total objects which are actually present, but in case of percentages we bring the actual total number of objects to 100 by multiplying or dividing, and similarly the actual quantity of that above mentioned type of objects which is of our interest. Out of these 800 given books, we must determine the total number of French books.
When the quantity in percentages is given as 8% out of 800 volumes, we must mathematically determine the real number of French books.
Now, if the 800 actual books are thought of as 100 percent, then 1 percent of the books will be represented in actual numbers as

, which is 8 books. Next, we must determine the actual number of 8 percent of the books, which is, So when 1 percent of the books are represented in actual numbers as

, which is 8 books, then 8 percent of the books will be represented in actual numbers as

, which is 64.
Hence, the correct answer is option 2.

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