14 (a) Hong has $4000 to invest. She invests $2000 at a rate of 2.5% per year simple interest. She also invests $2000 at a rate of 2% per year compound interest. (i) Find the value of each investment at the end of 8 years. Simple interest investment $ .................................................... Compound interest investment $ .................................................... [5] (ii) Find the overall percentage increase in the $4000 investment at the end of 8 years. ............................................% [2] © Cambridge University Press & Assessment 2022 0580/04/SP/25 11 (iii) Find the number of complete years it takes for the compound interest investment of $2000 to become greater than $2500. ............................................... [3] (b) Alain invests $5000 at a rate of r% per year compound interest. At the end of 15 years, the value of the investment is $7566. Find the value of r. r = .............................................. [3] © Cambridge University Press & Assessment 2022 0580/04/SP/25 [Turn over 12 2