 Home
 Quantitative
 English
 Reasoning
 IT Officer
 Programming

Computer
 Computer Awareness Questions Answers  Set 1
 Computer Awareness Questions Answers  Set 2
 Important Abbreviations Computer Awareness Questions Answers
 Important File Extensions Questions Answers
 Computer System Architecture Questions Answers
 MS Office Questions Answers
 MS Excel Questions Answers
 MS PowerPoint Questions Answers

GK
 Geography Questions Answers
 Indian History Questions Answers
 World History Questions Answers
 Indian Economy Questions Answers
 Indian Polity and Constitution
 Physics Questions Answers
 Chemistry Questions Answers
 Biology Questions Answers
 First In India
 First In World
 Longest and Largest
 Books and Authors
 Important Days of year
 Countries and Capitals
 Inventions and Inventors

Current Affairs
 Current Affairs
 Current Affairs 2016
 Current Affairs 2016  2017 PDF
 Current Affairs October 2017
 Current Affairs September 2017
 Current Affairs August 2017
 Current Affairs July 2017
 Current Affairs June 2017
 Current Affairs May 2017
 Current Affairs April 2017
 Current Affairs March 2017
 Current Affairs February 2017
 Current Affairs January 2017
 Current Affairs December 2016
 Current Affairs November 2016
 Current Affairs October 2016
 Govt Jobs
 Exams
 Online Quiz
 You are here
 Home
 Quantitative Aptitude
 Arithmetic Aptitude Questions Answers
 Area Questions Answers
 Aptitude Question
 Current Affairs 2017
 Current Affairs 2016
 Current Affairs December 2016
 Current Affairs November 2016
 Current Affairs October 2016
 Current Affairs September 2016
 Current Affairs August 2016
 Current Affairs July 2016
 Current Affairs June 2016
 Current Affairs May 2016
 Current Affairs April 2016
 Current Affairs March 2016
 Current Affairs February 2016
 Current Affairs January 2016
 Current Affairs 2016
 Current Affairs 2015
 Current Affairs January 2015
 Current Affairs February 2015
 Current Affairs March 2015
 Current Affairs April 2015
 Current Affairs May 2015
 Current Affairs June 2015
 Current Affairs July 2015
 Current Affairs August 2015
 Current Affairs September 2015
 Current Affairs October 2015
 Current Affairs November 2015
 Current Affairs December 2015
 Current Affairs 2015
 Current Affairs PDF
 Current Affairs PDF Download
 Current Affairs September 2016 PDF
 Current Affairs October 2016 PDF
 Current Affairs November 2016 PDF
 Current Affairs December 2016 PDF
 Current Affairs January 2017 PDF
 Current Affairs February 2017 PDF
 Current Affairs March 2017 PDF
 Current Affairs April 2017 PDF
 Current Affairs May 2017 PDF
 Current Affairs June 2017 PDF
 Current Affairs July 2017 PDF
 Current Affairs August 2017 PDF
 Current Affairs September 2017 PDF
Question Detail
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
 32%
 34%
 42%
 44%
Answer: Option D
Explanation:
Let original length = x metres and original breadth = y metres.
\begin{aligned}
\text{Original area } = \text{xy } m^2 \\
\text{New Length }= \frac{120}{100}x = \frac{6}{5}x \\
\text{New Breadth }= \frac{120}{100}y = \frac{6}{5}y \\
=>\text{New Area }= \frac{6}{5}x * \frac{6}{5}y \\
=>\text{New Area }= \frac{36}{25}xy \\
\text{Area Difference} = \frac{36}{25}xy  xy \\
= \frac{11}{25}xy \\
Increase \% = \frac{Differnce}{Actual}*100 \\
= \frac{11xy}{25}*\frac{1}{xy}*100 = 44\%
\end{aligned}
1. The Diagonals of two squares are in the ratio of 2:5. find the ratio of their areas.
 4:25
 4:15
 3:25
 3:15
Answer: Option A
Explanation:
Let the diagonals of the squares be 2x and 5x.
Then ratio of their areas will be
\begin{aligned}
\text{Area of square} = \frac{1}{2}*{Diagonal}^2 \\
\frac{1}{2}*{2x}^2:\frac{1}{2}*{5x}^2 \\
4x^2:25x^2 = 4:25
\end{aligned}
2. If the ratio of the areas of two squares is 225:256, then the ratio of their perimeters is :
 15:12
 15:14
 15:16
 15:22
Answer: Option C
Explanation:
\begin{aligned}
\frac{a^2}{b^2} = \frac{225}{256} \\
\frac{15}{16} \\
<=> \frac{4a}{4b} = \frac{4*15}{4*16} \\
= \frac{15}{16} = 15:16
\end{aligned}
3. What are the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad ?
 714
 814
 850
 866
Answer: Option B
Explanation:
In this type of questions, first we need to calculate the area of tiles. With we can get by obtaining the length of largest tile.
Length of largest tile can be obtained from HCF of length and breadth.
So lets solve this,
Length of largest tile = HCF of (1517 cm and 902 cm)
= 41 cm
Required number of tiles =
\begin{aligned}
\frac{\text{Area of floor}}{\text{Area of tile}} \\
= \left(\frac{1517\times902}{41 \times 41}\right)\\
= 814
\end{aligned}
4. A courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is :
 16000
 18000
 20000
 22000
Answer: Option C
Explanation:
\begin{aligned}
\text{Number of bricks =}\frac{\text{Courtyard area}}{\text{1 brick area}} \\
= \left( \frac{2500 \times 1600}{20 \times 10} \right) \\
= 20000
\end{aligned}
5. The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
 32%
 34%
 42%
 44%
Answer: Option D
Explanation:
Let original length = x metres and original breadth = y metres.
\begin{aligned}
\text{Original area } = \text{xy } m^2 \\
\text{New Length }= \frac{120}{100}x = \frac{6}{5}x \\
\text{New Breadth }= \frac{120}{100}y = \frac{6}{5}y \\
=>\text{New Area }= \frac{6}{5}x * \frac{6}{5}y \\
=>\text{New Area }= \frac{36}{25}xy \\
\text{Area Difference} = \frac{36}{25}xy  xy \\
= \frac{11}{25}xy \\
Increase \% = \frac{Differnce}{Actual}*100 \\
= \frac{11xy}{25}*\frac{1}{xy}*100 = 44\%
\end{aligned}
Videos @mastguru
 Copyright 2014  All rights reserved
 Terms Of Use & Privacy Policy
 Copyright
 Contact Us