Find the rate of interest p.a., if interest charged for 9 months be 9% of the money borrowed.
If the interest charged for 18 months is 0.15 times the money borrowed under simple interest, then the rate of interest per year is _______
Ram borrowed some money at the rate of 6% p.a. for the first 6 years, at the rate of 8% p.a. for next 8 years, and 9% p.a. for next 9 years and pays a total simple interest of Rs. 36200, how much money did he borrow?