{"id":183003,"date":"2025-10-22T20:50:00","date_gmt":"2025-10-22T15:20:00","guid":{"rendered":"https:\/\/www.practicemock.com\/blog\/?p=183003"},"modified":"2025-10-22T18:46:37","modified_gmt":"2025-10-22T13:16:37","slug":"how-to-solve-average-based-questions-for-rrb-po-exams","status":"publish","type":"post","link":"https:\/\/www.practicemock.com\/blog\/how-to-solve-average-based-questions-for-rrb-po-exams\/","title":{"rendered":"How to Solve Average-Based Questions for RRB PO Exams?"},"content":{"rendered":"
Home<\/a><\/span> \u00bb IBPS RRB PO<\/a><\/span> \u00bb How to Solve Average-Based Questions for RRB PO Exams?<\/span><\/span><\/div>\n\n\n

Questions related to averages regularly make up a considerable proportion of questions in the Quantitative Aptitude section of the RRB PO exam. While the concept appears simple, candidates who can identify the logic behind the question and apply quick, accurate calculation methods will find this topic a true test of their conceptual understanding. This blog will explain the important concepts, types of average questions, and best methodologies to solve average-based questions in the context of the RRB PO exam, along with a PDF to practice the same.\u00a0<\/p>\n\n\n\n

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Take <\/strong>a Free Mock Test & Enhance Your Understanding of the Exam Topics<\/strong><\/a><\/div>\n<\/div>\n\n\n\n

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What are Average-Based Questions?<\/strong><\/h2>\n\n\n\n

The average of a set of numbers is simply the sum of the numbers divided by the total count of numbers. While the formula is basic, RRB PO questions often combine averages with other arithmetic concepts such as ratio, percentage, and mixtures, making them moderately complex.<\/p>\n\n\n\n


Formula for calculating Average<\/strong>
<\/strong> Average = (Sum of all observations) \/ (Number of observations)<\/p>\n\n\n\n

Download Average-Based Questions PDF<\/strong><\/h2>\n\n\n\n

In this section, we are providing average-based questions PDF for practice. The PDF is based on the previous year’s questions and is made after a thorough analysis done by our experts. Download it and practice the questions for better performance on the exam day. <\/p>\n\n\n\n

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Download Average-Based Questions PDF<\/a><\/div>\n<\/div>\n\n\n\n

Types of Average-Based Questions in RRB PO Exam<\/strong><\/h2>\n\n\n\n

To prepare effectively, you should understand the various patterns in which average-based questions are asked. In this section, we have provided various average-based types along with an example for better understanding.<\/p>\n\n\n\n

Simple Average<\/strong><\/h3>\n\n\n\n


<\/strong> These are direct questions where you calculate the mean of given values.
Example:<\/em> Find the average of 12, 18, 24, and 30.
Solution:<\/strong> (12 + 18 + 24 + 30) \/ 4 = 84 \/ 4 = 21<\/strong><\/p>\n\n\n\n

Weighted Average<\/strong><\/h3>\n\n\n\n

When values contribute unequally, a weighted average is used.
Example:<\/em> The average marks of a student in Maths and English are 60 and 80, respectively. If the ratio of mark distribution is 2:3, find the overall average.
Solution:<\/strong> (60\u00d72 + 80\u00d73) \/ (2+3) = (120 + 240)\/5 = 72<\/strong><\/p>\n\n\n\n

Average with Added or Removed Items<\/strong>
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These involve the concept of adding or removing numbers and observing how the average changes.
Example:<\/em> The average age of 5 people is 30 years. When a new person joins, the average becomes 32 years. Find the age of the new person.
Solution:<\/strong> Total age of 5 people = 5\u00d730 = 150
New total = 6\u00d732 = 192
Age of new person = 192 \u2013 150 = 42 years<\/strong><\/p>\n\n\n\n

Average of Groups
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These questions involve combining multiple groups with different averages.
Example:<\/em> The average marks of 20 boys are 60, and that of 30 girls is 50. Find the combined average.
Solution: (20\u00d760 + 30\u00d750) \/ (20 + 30) = (1200 + 1500)\/50 = 54<\/p>\n\n\n\n

Average Speed<\/strong><\/h3>\n\n\n\n


<\/strong>When different distances are covered at different speeds, the average speed is found using:
Formula: Average Speed = (2 \u00d7 x \u00d7 y) \/ (x + y)
Example:<\/em> A car travels at 40 km\/h going and 60 km\/h returning.
Solution: (2\u00d740\u00d760)\/(40+60) = 4800\/100 = 48 km\/h<\/p>\n\n\n\n

How to Solve Average-Based Questions in RRB PO Exam<\/strong><\/h2>\n\n\n\n

Step 1: Understand the Question Pattern<\/strong>
<\/strong> Read carefully whether the question is based on the simple average, the group average, or the change in average. Misinterpreting the question type can lead to incorrect answers.<\/p>\n\n\n\n

Step 2: Use Ratio Logic When Possible<\/strong>
<\/strong> Instead of performing lengthy calculations, apply ratios to find relative differences. For example, in weighted averages, directly multiplying weights saves time.<\/p>\n\n\n\n

Step 3: Practice Mental Calculation<\/strong>
<\/strong> Since average-based questions often involve division and multiplication, improving your calculation speed helps save time. Learn short tricks for dividing by 5, 25, and 50.<\/p>\n\n\n\n

Step 4: Avoid Fractions When Possible<\/strong>
<\/strong> Try converting fractions into percentages or ratios for quicker mental computation. For instance, instead of 3\/5, think of it as 60%.<\/p>\n\n\n\n

Step 5: Revise Formulae Regularly<\/strong>
<\/strong> Maintain a small formula notebook with essential relationships such as:<\/p>\n\n\n\n