Percentages Questions for OICL AO 2025 Exam, Get Free PDF

Percentages is one of the most important topics in the Quantitative Aptitude section of the OICL AO 2025 Exam. This topic forms the foundation of several other chapters such as Profit and Loss, Simple and Compound Interest, Ratio and Proportion, and Data Interpretation. If your percentage concepts are clear, you automatically improve your accuracy and speed across multiple areas of the exam. With focused practice and smart calculation techniques, you can easily score full marks in this topic. In this blog, you will understand the importance of Percentages for OICL AO, key concepts, important question types, solved examples, preparation strategy, and a free PDF for practice.

Download Percentages Questions for OICL AO Exam

In this section, we are providing a free PDF of the Percentages Questions for the OICL AO Exam. The PDF is curated by our experts after analysing trends from previous years. 

In this section, we have provided the important types of percentage questions asked based on previous papers. 

Percentage Increase and Decrease

These questions test how a quantity changes over time.
Example
If the price of an article increases by 20 percent and then decreases by 10 percent, what is the net change.
Solution
Net change = 20 − 10 − (20×10)/100 = 8 percent increase.

Successive Percentage Change

Such questions are frequently asked and many students make mistakes here.
Example
A number is increased by 25 percent and then decreased by 20 percent.
Solution
Net change = 25 − 20 − (25×20)/100 = zero.
There is no net change.

Percentage Comparison

These questions compare two quantities using percentages.
Example
A is 25 percent more than B. By what percent is B less than A.
Solution
B is 20 percent less than A.

Population and Percentage

Percentage change is used to calculate an increase or decrease in population.
Example
If a population increases by 10 per cent annually, what will be the population after two years?
Solution
Multiply by 110 twice.

Exam-Based Word Problems

Many arithmetic problems are percentage-driven.
Profit and Loss, Discount, and Interest questions often depend on percentage calculations.

Short Tricks for Fast Calculation

You should memorise common percentage values to save time.

• 10 percent = one tenth
• 20 percent = one fifth
• 25 percent = one fourth
• 50 percent = one half
• 12.5 percent = one eighth

Learning these conversions helps you solve questions mentally without long calculations.

How to Prepare Percentages for OICL AO?

• You should revise all basic percentage formulas on a daily basis so that there is no confusion during the actual exam. Strong fundamentals help you solve questions confidently under time pressure.
• You should practise at least 20–30 per cent of questions regularly to develop both speed and accuracy, as this topic relies heavily on calculation efficiency.
• You should focus more on learning calculation shortcuts and mental methods instead of using lengthy traditional approaches, as time management plays a key role in OICL AO.
• You should analyse every mock test carefully to check whether your mistakes are due to weak concepts or calculation errors. This analysis helps you improve in a targeted manner.
• You should always combine percentage practice with related topics like Profit and Loss and Data Interpretation, since percentage concepts are frequently used in these areas.

Common Mistakes to Avoid

• Many aspirants forget to calculate the net change in successive percentage questions, which leads to incorrect answers. You should always apply the standard net change formula.
• Many students convert percentages into fractions incorrectly during calculations. Regular revision of common percentage values helps you avoid this mistake in the exam.

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