The total profit earned by company A in 2011 and company C in 2012 together was approximately what per cent of the profit earned by company A in 2007?
A) 288%
B) 264%
C) 230%
D) 100%
E) 144%
Correct Answer: A
$ \therefore $ Required percentage $ =\frac{115+115}{80}\times 100% $ $ =\frac{230}{80}\times 100%=\frac{23}{8}\times 100% $ $ =\frac{23\times 25}{2}=287.5%\approx 288 $