Here, MV = Rs. 80, FV = Rs. 100, Number of shares = 50, Rate of dividend = 20%
∴ Sum invested = Number of shares × MV
= 50 × 80
= Rs. 4000
Dividend per share = 20% of FV
= 20/100 × 100 = Rs. 20
∴ Total dividend of 50 shares = 50 × 20 = Rs. 1000
Now, rate of return = (Total divident) /(sum invested) x 100
= (1000/4000) x 100
= 25%
∴ Rate of return on investment is 25%