A bank offers 20% compound interest per half year. A customer deposits Rs 6000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is
Calculate the economic profit for a firm if its total revenues are Rs 180 crores, explicit costs are Rs 95 crores, and implicit costs are Rs 25 crores.
The sum of the digits of a 2-digit number is 11. If we add 45 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?