
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 %
 10%
 6%
 12%
Answer is d
2. The amount to be paid, when principle = Rs.2000, rate of simple interest R = 5%, T = 2 years, is
 Rs 2400
 Rs 3400
 Rs 3200
 Rs 2200
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
4. A certain sum of money amounts to Rs.2200 at 5% p.a. rate of interest, Rs.2320 at 8% interest in the same period of time. The period of time is
 4 years
 2 years
 3 years
 5 years
Answer is b
5. At what percent of simple interest will a sum of money double itself in 15 years?
 20/3 %
 6 %
 19/3 %
 13/2 %
Answer is a
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