The market price of T-Bank shares is 25% higher than the face value, which means that each share is being sold at a price of:
100 + 25% of 100 = 100 + 25 = Nu 125
Karma has Nu 125,000 to invest, so he can buy:
Number of shares = Total investment amount / Price per share
Number of shares = 125000 / 125
Number of shares = 1000
Therefore, Karma can buy 1000 shares of T-Bank with his investment of Nu 125,000 at a premium of 25%.