TNPSC Group II · Aptitude and Mental Ability
Interest calculations, EMIs, compounding.
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Q1 · Simple and Compound Interest · EASY
A sum of Rs. 8000 is lent at 5% per annum simple interest for 3 years. What is the total interest earned?
Q2 · Simple and Compound Interest · MEDIUM
A man borrows Rs. 12000 at 10% per annum compound interest. If the interest is compounded annually, what amount will he have to pay back after 2 years?
Q3 · Simple and Compound Interest · MEDIUM
The difference between compound interest and simple interest on a certain sum at 8% per annum for 2 years is Rs. 64. What is the principal amount?
Q4 · Simple and Compound Interest · MEDIUM
A sum amounts to Rs. 6480 in 2 years and Rs. 7776 in 3 years at compound interest compounded annually. What is the rate of interest per annum?
Q5 · Simple and Compound Interest · HARD
A person invests Rs. 20000 in a scheme that offers 12% per annum compound interest compounded half-yearly. What will be the amount after 1 year?