BPSC 60th-62nd Prelims Exam 12 Feb 2017 Solved Paper

Total invested money $=20\mathrm{lac}$
Total profit $=20\%$
Profit money
$=\frac{2000000\times 20}{100}=4\mathrm{lac}$
Investment ratio of $\mathit{A},\mathit{B}$ and $\mathit{C}$
$=7:2:1$
Profit ratio of $\mathit{A},\mathit{B},\mathit{C}=7:2:1$
The amount of profit gain by A
$=\frac{4\mathrm{lac}\times 7}{10}=2.8\mathrm{lac}$
The amount of profit gain by B
$=\frac{4\mathrm{lac}\times 2}{10}=0.8\mathrm{lac}$
Now, amount of tax given by A
$=2.8\mathrm{lac}\times \frac{30}{100}=84,000$
Amount of tax given by B
$=0.8\mathrm{lac}\times \frac{20}{100}=16000$
Now, Net profit of A
$=280000-84000=1,96,000$
Net profit of B $=80000-16000$
$=64000$
$\therefore$ Net profit of A than B (in %)
$=\frac{196000}{64000}\times 100=306.25\%$