Which mental has a melting point of 1084, It is widely used as an agricultural poison, and as an agricultural in the purification of water in its pure form its is reddish-brown in colour
Two equal sums of money are lent at the same time at 9% annum and 8% per annum simple interest respectively. The former is recovered six month earlier than the later and the amount in each cases is Rs. 17680. Find the sum and the times for which they are lent.
