in Quantitative Aptitude edited by
1,729 views
9 votes
9 votes

The ratio of male to female students in a college for five years is plotted in the following line graph. If the number of female students in $2011$ and $2012$ is equal, what is the ratio of male students in $2012$ to male students in $2011$?

  1. $1:1$
  2. $2:1$
  3. $1.5:1$
  4. $2.5:1$
in Quantitative Aptitude edited by
1.7k views

1 Answer

14 votes
14 votes
Best answer

(C) 1.5 : 1

2011: 

  • $m{_1}$ = no of male students
  • $f{_1}$ = no of female students
  • $\dfrac{m{_1}}{f{_1}}=1$

2012:

  • $m{_2}$ = no of male students
  • $f{_2}$ = no of female students
  • $\dfrac{m{_2}}{f{_2}}=1.5$

Given : $f{_1}=f{_2}=f$
So , $\dfrac{m{_1}}{f}=1$    and   $\dfrac{m{_2}}{f}=1.5$
$f=\dfrac{m{_1}}{1}$      and   $f=\dfrac{m{_2}}{1.5}$

Both the equations can be equated.

$\dfrac{m{_1}}{1} =\dfrac{m{_2}}{1.5}$

Ratio of male students in 2012 to male students in 2011 $\Rightarrow \dfrac{m{_2}}{m{_1}} =\dfrac{1.5}{1} = 1.5 : 1$

edited by
Answer:

Related questions