Legal Principle: The act of using influence on another and taking undue advantage of that person is called undue influence.
Factual Situation: A borrowed Rs.50,000 at 12 percent per annum interest from B repayable on demand. B made the demand and on failure of A to pay, he was about to sue A to get back his money. A requested B to take interest at the rate of 18 per cent per annum. On refusal to pay interest at 18 percent, by A,B filed a suit.
Issue: Whether B will succeed in his suit?