
Concepts
 Practice Questions
 Important Formulas
 ₹800 becomes ₹956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4%, what amount will ₹800 become in 3 years?
 ₹ 1025
 ₹ 1050
 ₹ 1020.50
 ₹ 1052
Answer is d
2. A man lent ₹60,000, partly at 5% and the rest at 4% simple interest. When the total annual interest is ₹2560, the money lent at 4% was
 ₹ 44000
 ₹ 45000
 ₹ 40000
 ₹ 30000
Answer is a
3. The population of a village decreases at the rate of 20% per annum. When its population 2 years ago was 10,000, the present population
 6400
 6000
 4600
 7600
Answer is a
4. If a sum of money amounts to ₹12,900 and ₹14,250 at the end of 4^{th} year and 5^{th} year respectively at a certain rate of simple interest, then the rate of interest is
 12%
 20%
 10%
 18%
Answer is d
5. Alipta got some amount of money from her father. In how many years will the ratio of the money and interest obtained from it be 10.3 at the rate of 6% simple interest per annum?
 3 years
 4 years
 7 years
 5 years
Answer is d
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