Symbiosis National Aptitude Test SNAP 2014 Paper

Let the total number of shots be x. then,
Shots fired by A = $\frac{5}{8}\mathit{x}$ ; Shots fired by B = $\frac{3}{8}\mathit{x}$
Killing shots by A = $\frac{1}{3}$ of $\frac{3}{8}$ x = $\frac{3\mathit{x}}{16}$
∴ $\frac{3\mathit{x}}{16}$ = 27 or x = $\left(\frac{27\times 16}{3}\right)$ = 144
Birds killed by A = $\frac{5\mathit{x}}{24}$ = $\left(\frac{5}{24}\times 144\right)$ = 30