In an organisation the average salary of 25 employees is Rs. 12,000. If the average salary of 15 employees is increased by 15% and of the remaining 10 employees by 10%, then the percentage increase in the average salary of all the 25 employees will be
Brijbhushan borrowed a sum of Rs. 2000 at 2% per month simple interest yearly basis. It was decided that if the sum would not be returned at the end of year interest would be charged on the fixed interest. If the sum was returned after two years then how much Brijbhushan did pay ?