TNPSC Group II · Aptitude and Mental Ability
Percentage calculations and applications.
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Q1 · Percentage · EASY
A shopkeeper marks his goods 25% above the cost price and then allows a discount of 10%. What is his net profit percentage?
Q2 · Percentage · MEDIUM
In an examination, a student scored 35% marks and failed by 40 marks. Another student scored 45% marks and secured 10 marks more than the passing marks. What is the maximum marks for the examination?
Q3 · Percentage · EASY
The population of a town increases by 10% in the first year and decreases by 10% in the second year. What is the net change in population after two years?
Q4 · Percentage · MEDIUM
A man spends 60% of his income. If his income increases by 20% and his expenditure increases by 10%, then what is the percentage increase in his savings?
Q5 · Percentage · HARD
A mixture contains milk and water in the ratio 5:3. If 16 litres of water is added to the mixture, the percentage of water in the new mixture becomes 50%. What was the initial quantity of milk in the mixture?