A sum of money compounded annually becomes Rs.625 in two years and Rs.675 in three years. The rate of interest per annum is
Direction for questions 58 to 87: Answer the questions independently.
A man invests Rs.3,000 at the rate of 5% per annum at simple interest. How much more should he invest at the rate of 8% for the same period,so that he can earn a total of 6% per annum?