IBPS RRB PO Prelims 3 Aug 2024 Shift 2 Paper

Ravi lent Rs. 15,000 to Suresh for 4 years and Rs. 18,000 to Ramesh for 5 years on simple interest at the same rate of interest. He received a total interest of Rs. 16,200 from both loans. What is the rate of interest per annum?