Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-15

Directions: Study the table to answer the given questions.

Data Related to Books Sold Through Online Mode and Offline Mode in a City

Year Number of books sold (in thousands) (Online mode + Offline mode) Percentage of books sold through online mode Respective ratio of number of non-fiction books sold to number of fiction books sold (Online mode + Offline mode)

2010 690 40 2 : 3

2011 720 57.5 4 : 5

2012 945 60 7 : 8

2013 1240 75 1 : 3

2014 1600 79 3 : 5

What is the approximate percentage decrease in the number of books sold through offline mode in the year 2014 from the year 2010?

A) 15%

B) 19%

C) 21%

D) 23%

E) 25%

Correct Answer: B

Solution :

Number of books sold through offline mode in year 2014 \[=1600\times \frac{21}{100}=336\]

Number of books sold through offline mode in year 2010 \[=690\times \frac{60}{100}=414\]

\[\therefore \] Percentage decrease

\[=\,\frac{78}{414}\,\times \,100\]%\[=\,18.84\,\approx \,19\]%