Management Aptitude Test Feb 2012 Paper

(1) Let the parts of money invested at 10% and 15% per annum be ${\mathit{P}}_1$ and ${\mathit{P}}_2$ respectively.
∴ $\frac{{\mathit{P}}_1\times 10\times 1}{100}$ + $\frac{{\mathit{P}}_2\times 15\times 1}{100}$ = 1900
⇒ 10${\mathit{P}}_1$ + 15${\mathit{P}}_2$ = 190000
⇒ 2${\mathit{P}}_1$ + 3${\mathit{P}}_2$ = 38000 ......(i)
Also, $\frac{{\mathit{P}}_1\times 15\times 1}{100}$ + $\frac{{\mathit{P}}_2\times 10\times 1}{100}$ = 2100
15${\mathit{P}}_1$ + 10${\mathit{P}}_2$ = 210000
3${\mathit{P}}_1$ + 2${\mathit{P}}_2$ = 42000 .........(ii)
On solving Eqs. (i) and (ii), we get
${\mathit{P}}_2$ = ₹ 6000