- Concepts
 - Practice Questions
 - Important Formulas
 
- If the simple interest on Re.1 for 1 month is 1 paisa, then the rate percent per annum will be
 
- 8
 
Answer is d
Â
2. The amount to be paid, when principle = Rs.2000, rate of simple interest R = 5
Answer is d
 
3. A certain sum doubles in 7 years at simple interest. For the same interest rate it will become 4 times in how many years
- 28
 - 10
 - 14
 - 21
 
Answer is d
Â
4. A certain sum of money amounts to Rs.2200 at 5
Answer is b
Â
5. At what percent of simple interest will a sum of money double itself in 15 years?
- 20/3
 
Answer is a
Read More: Simple Interest Concepts
