A man invested a certain sum in scheme A at a simple interest rate of 15% per annum for 2 years and earned a total simple interest of Rs. 7800. He the...
Question
A man invested a certain sum in scheme A at a simple interest rate of 15% per annum for 2 years and earned a total simple interest of Rs. 7800. He then increased his investment by Rs. X and invested the new amount in scheme B, which offers compound interest at 10% per annum for 2 years, earning Rs. 6720 as compound interest. Find the value of X (in Rs.).