$12\frac{1}{2}\%$

$13\frac{1}{2}\%$

15%

$16\frac{2}{3}\%$

C. 15%

Investment = Rs. [20 x (50 - 5)] = Rs. 900.

Face value = Rs. (50 x 20) = Rs. 1000.

Dividend =$Rs.\frac{27}{2}\times \frac{1000}{100}=Rs.135.$

Interest obtained =$\left(\frac{135}{900}x100\right)\%=15\%$

Rs. 80

Rs. 96

Rs. 106

Rs. 108

3 : 4

3 : 5

4 : 5

16 : 15

Rs. 5640

Rs. 5760

Rs. 7500

Rs. 9600

Rs. 48

Rs. 75

Rs. 96

Rs. 133.33

Rs. 207.40

Rs. 534.60

Rs. 648.00

Rs. 655.60

Rs. 12

Rs. 15

Rs. 18

Rs. 21

11% stock at 143

$9\frac{3}{4}\%stockat117$

Both are equally good

Cannot be compared, as the total amount of investment is not given.

Rs. 4000

Rs. 4500

Rs. 5500

Rs. 6000

Rs. 83.33

Rs. 110

Rs. 112

Rs. 120

Rs. 3100

Rs. 6240

Rs. 6500

Rs. 9600

7.5%

8%

9.7%

None of these

Rs. 108.25

Rs. 112.20

Rs. 124.75

Rs. 125.25

$12\frac{1}{2}\%$

$13\frac{1}{2}\%$

15%

$16\frac{2}{3}\%$

Rs. 4800

Rs. 5000

Rs. 5400

Rs. 5600

Rs. 95.75

Rs. 96

Rs. 96.25

Rs. 104.25