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This line graph shows the effect of compound interest on an original debt of £1000 at an interest rate of 35 per cent per annum. The horizontal axis shows the years from 1 to 10 in intervals of one year. The vertical axis is labelled ‘Debt £’ and is marked in intervals of £10,000 from 0 to £30,000. At the end of year 5 the amount owing is £4484 and by the end of year 10 it is £20,107. The precise figures are given in a table.

 3.3 More on interest