# Quantitative Aptitude – Arithmetic – Percentage – In 2010, a library contained a total of 11500

## In 2010, a library contained a total of 11500 – Video Solution

Q. In 2010, a library contained a total of 11500 books in two categories – fiction and nonfiction. In 2015, the library contained a total of 12760 books in these two categories. During this period, there was 10% increase in the fiction category while there was 12% increase in the non-fiction category. How many fiction books were in the library in 2015??
1. 6000
2. 6160
3. 5500
4. 6600

Solution: In 2010:
Fiction = x
Non fiction = 11500-x
In 2015:
Fiction = 1.1x
Non fiction = 1.2(11500-x)
But in 2015, total books are 12760
So, 1.1x + 1.2(11500-x) = 12760
On solving, we get Number of fiction books in the library in 2015 is 1.1x = 6600

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