Out of Rs.50,000 that a man has, he lends Rs.8000 at 5½ per annum simple interest and Rs.24,000 at 6% per annum simple interest. He lends the remaining money at a certain rate of interest so that the gets total annual interest of Rs.3680. The rate of interest per annum, at which the remaining money is lent, is
Carefully observe pictures given below and answer the following questions. Look at the below diagram and answer the given questions.The teeth marked II represent.