Rs. 12800 is payable after 3 years. If is to be paid in 3 installments each year. First installment is half of the second & one-third of the third installment. Find each installment if rate of interest is 10% per annum.
A man borrows Rs. 8190 without interset and repays the loan in 12 monthly instalments. If each instalment is double the preceding one then the first and last instalments are (in rupees)
