The interest that you will have to pay on the amount of 35,000 pounds depends on several factors like the rate of interest that you borrowed the money on and for what duration. Suppose you borrowed the money at the annual interest rate of 6% and it is due to be repaid in 5 years. That means that the total repayable amount for you will be 2100 pounds more then the actually repayable amount which is 35000 pounds.
However, before you start calculating the interest rate that you have to pay, you should first ascertain certain factors like rate of interest, number of repayments, duration of time that you have taken the loan for and whether you have to pay the interest monthly or annually and what are the terms of your borrowing the money. I can give the link to a website where you can calculate the rate of interest by feeding in the details and obtain the interest that you will have to pay. Here is the link www.fincher.org/Utilities/CalculateInterest.shtml.
However, before you start calculating the interest rate that you have to pay, you should first ascertain certain factors like rate of interest, number of repayments, duration of time that you have taken the loan for and whether you have to pay the interest monthly or annually and what are the terms of your borrowing the money. I can give the link to a website where you can calculate the rate of interest by feeding in the details and obtain the interest that you will have to pay. Here is the link www.fincher.org/Utilities/CalculateInterest.shtml.