1. A loan of Shs 6,000,000/= disbursed one year from today is repaid in four installments commencing at the end of year three. The second repayment is at the end of year five and is half as much again as the first installment and is 15% less than the third installment (due at the end of year six). The final installment is due at the end of year eight and is 25% more than the first installment.

The rate of interest is 10% per annum in years one and two; 13% per annum in years three and four; and 12% per annum thereafter. Compute the amount of each installment.