The simple interest accrued in five years on a principal of Rs. 50,000 is one – tenth of the principal. What is the rate of simple interest p.a.?

R = (5000 x 100)/(50000 x 5) = 2% p.a.

- A took a loan of Rs.4450 at simple interest of 10% p.a. and invested the same money in a scheme at simple interest of 20% p.a. Find the profit earned by A at the end of 3 years.
- Rs.7800 is divided into two parts such that if one part be invested at 3% and the other at 5%, the annual interest from both the investments is Rs. 320. Find each part.
- At what % of simple interest per annum will Rs. 400 amount to Rs. 620 in five years?
- A sum of money lent at compound interest at the rate of 10% per annum is paid back in three equal instalments of Rs 3,993. Find the sum?
- A took a loan of Rs.5320 at simple interest of 20% p.a. and invested the same money in a scheme at simple interest of 30% p.a. Find the profit earned by A at the end of 3 years.
- A took a loan of Rs.5410 at simple interest of 20% p.a. and invested the same money in a scheme at simple interest of 30% p.a. Find the profit earned by A at the end of 2 years.
- A certain sum of money will be doubled in 25 years at the rate of simple interest percent per annum is:
- Akshay invested Rs. 1320 in two schemes P and Q in the respective ratio of 8:3. Scheme P and Q are offering simple interest at the rate of 5% per annum and 8% per annum, respectively. Find the interest obtained after 2 years from scheme P.
- Rs.7600 is divided into two parts such that if one part be invested at 4% and the other at 5%, the annual interest from both the investments is Rs. 336. Find each part.
- A certain sum of money will be doubled in 80 years at the rate of simple interest percent per annum is:

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