Step1: Calculate the profit
Nominal value of 120 shares
=₹40×120=₹4,800
Market value of 120 shares
=₹42.50×120=₹5,100
His profit =₹5,100−₹4,800=₹300
Step 2: Calculate profit percent
Profit percent=Profitnominal value×100
=3004800×100
=6.25%
Hence, the profit earned is ₹300 and profit percent is 6.25%