A "discount note" subtracts the interest from the original amount borrowed, then at the end you pay back the amount "borrowed". So, for example, if you wanted to wind up with $1000 in hand from Ciitibank, at 19% interest (how old is this problem?) how much would you have to "borrow"? Well, if you borrowed A dollars for one year, you would have to pay 0.19A in interest so you would actually receive A- .19A= .81A= 1000. You would have to "borrow" A= 1000/.81= 1235 dollars. The interest would be $235. If, instead, you borrowed $1000 from ICICI Bank at "r" interest, you would have to pay 1000r= 235 to match that or r= 235/1000= 0.235 or 23.5%. ICICI Bank would have toincreaseinterest by 3.5% in order to match Citibank's rate.