a proprietorship firm takes a loan from one State Financial Corporation. Loan agreement and agreement for hypothecation executed. Rate of interest as per agreements 17.5%. both agreements contains a clause: " Borrower will have to pay interest at the rate fixed by corporation from time to time and intimated to borrower". Rtae of interest did go down considerably after availment of loan. corporation fixing lower rates for other borrowers, but not giving this facility to the borrower who has already availed the loans. is corporation justified in not allowing the benefit to the existing borrower.