The simple and compound interest that can be earned in two years at the same rate is Rs 1500 and Rs 1575 respectively. What is the rate (% per annum) of interest?
he difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 8% per annum is Rs 40. What is the sum?
The sum of the digits of a 2digit number is 17. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.