
Concepts
 Practice Questions
 Important Formulas
 A certain sum becomes 5 times in3 years, at simple interest, then in how many years it will become 13 times?
 15
 12
 6
 9
Answer is d
2. Simple interest received by a person in 10 years on a principle of Rs.9500 is 130% of the principle. What is the rate of interest (in %) per annum?
 13
 19
 12
 15
Answer is a
3. If the simple interest on a sum after 4 years is of the sum. Then the rate of interest per annum is
 5 %
 8 %
 4 %
 6 %
Answer is a
4. Mohan lent some amount of money at 9% simple interest and an equal amount of money at 10% simple interest each for two years. If his total interest was Rs.760. what amount was lent in each case?
 ₹ 1800
 ₹ 2000
 ₹ 1700
 ₹ 1900
Answer is b
5. Simple interest on ₹500 for 4 years at 6.25% per annum is equal to the simple interest on ₹400 at 5% per annum for a certain period of time. The period of time is
 5 years
 26/3 years
 4 years
 25/4 years
Answer is d
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