Average Problems for SSC Exams: Average is an important topic in the Quant section of exams like SSC CGL, SSC CHSL, SSC MTS, and others including banking and railway exams. In this blog, we are going to discuss some questions on average that will be useful for the candidates preparing for the competitive exams.
Common Mistakes Students Make in Average Based Questions SSC Exams
Many SSC aspirants lose marks in Average questions due to small calculation errors or misunderstanding the question pattern. Below are some frequent mistakes to avoid while attempting average-based questions in SSC CGL, SSC CHSL, SSC MTS, and other exams:
- Students often miscount the number of terms, especially when dealing with consecutive numbers or grouped data.
- They may misread the question and apply the simple mean formula even when the question demands a weighted or combined average.
- In problems involving change in average due to inclusion or exclusion, reverse calculations are often skipped or applied incorrectly.
- Some candidates overlook unit conversions in average speed questions, mixing time and distance units.
- A common error is making assumptions like equal intervals or values without confirming it from the question, leading to wrong conclusions.
- To avoid these, practice applying formulas carefully, double-check values, and read every question attentively during the exam.
Tips to Solve Average Questions Accurately in SSC Exams
Average-based questions are common in SSC exams and can be scoring if approached with the right strategy. Here are some practical tips to improve accuracy and speed:
- Understand the basic formula: Average = (Sum of quantities) ÷ (Number of quantities). Keep this at the core of every approach.
- Use shortcuts wisely in cases like consecutive numbers or equal intervals to save time.
- Always identify what is being averaged marks, speed, weight, age and check for any hidden conditions.
- Practice reverse calculation questions where a new item is added or removed and the average changes.
- For average speed problems, never apply the simple average; use the formula: Average Speed = (2ab)/(a + b) when distance is the same.
- Read the question twice to avoid missing out on details like “odd multiples” or “consecutive even numbers.”
- Don’t round off too early during calculations wait until the final step to avoid errors.
- Revise solved examples and attempt mock questions regularly to build confidence and familiarity with patterns.
These small improvements can make a big difference in your final score, especially in Tier 1 exams where speed and accuracy both matter.
Practice Average Questions for SSC Exams
These questions on average are specially prepared for SSC exams like CGL, CHSL, MTS, CPO, GD, JE, and others. The questions start from basic level and slowly become more challenging every five questions. Solving these will help you strengthen your concept of averages and improve your preparation for upcoming exams.
Q1. What is the average of the first five odd multiples of 3
A) 12
B) 15
C) 18
D) 21
Correct Answer: B
Q2. The average of four consecutive even numbers is 24. What is the smallest number?
A) 20
B) 22
C) 18
D) 24
Correct Answer: A
Q3. The average of three numbers is 42. If one number is 36 and the second is 48, what is the third number?
A) 42
B) 38
C) 40
D) 45
Correct Answer: A
Q4. A student scores 60, 65, 70, 55, and 50 marks in five subjects. What is the average?
A) 60
B) 58
C) 62
D) 56
Correct Answer: B
Q5. If the average of five numbers is 30 and four of them are 25, 32, 28, and 35, what is the fifth number?
A) 30
B) 27
C) 20
D) 30
Correct Answer: C
Q6. A cricketer played 5 innings with an average score of 48. In his sixth innings, he scored 60. What is his new average?
A) 50
B) 49
C) 51
D) 54
Correct Answer: B
Q7. The average of 9 consecutive odd numbers is 63. What is the largest of these numbers?
A) 71
B) 73
C) 75
D) 69
Correct Answer: C
Q8. The average age of a family of 6 members is 30 years. If a baby of age 2 is added to the family, what will be the new average?
A) 27
B) 28
C) 29
D) 26
Correct Answer: C
Q9. A class of 35 students has an average weight of 40 kg. If the weight of the teacher is included, the average becomes 40.5 kg. Find the weight of the teacher.
A) 50 kg
B) 57.5 kg
C) 60 kg
D) 58.5 kg
Correct Answer: C
Q10. The average of 8 numbers is 56. If two numbers 60 and 52 are excluded, what is the average of the remaining numbers?
A) 55
B) 57
C) 56
D) 58
Correct Answer: C
Q11. The average salary of 20 employees is ₹45,000. If the manager’s salary is added and the new average becomes ₹46,500, what is the manager’s salary
A) ₹70,000
B) ₹75,000
C) ₹80,000
D) ₹85,000
Correct Answer: C
Q12. The average marks of 40 students is 56. If 8 students failed and scored an average of 10 marks, what is the average of those who passed?
A) 67.5
B) 64
C) 61.2
D) 60
Correct Answer: A
Q13. A person spends ₹500 daily for 30 days. In the next 10 days, he spends ₹800 daily. What is his average daily spending over the 40 days?
A) ₹575
B) ₹600
C) ₹625
D) ₹550
Correct Answer: A
Q14. The average of the ages of A, B, and C is 30. A is twice as old as B, and B is 6 years older than C. What is the age of A?
A) 36
B) 42
C) 40
D) 38
Correct Answer: B
Q15. The average age of a group of 10 people is 28 years. If one person leaves and a 42-year-old joins, the new average becomes 29. What was the age of the person who left?
A) 22
B) 20
C) 25
D) 18
Correct Answer: A
Q16. A student needs an average of 75% in five subjects to pass. He scored 78%, 72%, 69%, and 74% in the first four. How much should he score in the fifth to just pass?
A) 76%
B) 81%
C) 80%
D) 72%
Correct Answer: C
Q17. A shopkeeper’s average monthly income for the first 8 months of the year is ₹25,000. For the next 4 months, it increases to ₹40,000. What is the average monthly income for the whole year?
A) ₹30,000
B) ₹32,500
C) ₹28,333
D) ₹33,000
Correct Answer: B
Q18. The average of 12 observations is 20. If two additional numbers 40 and 50 are added, what will be the new average?
A) 22.5
B) 25
C) 21.43
D) 23.75
Correct Answer: C
Q19. A company’s average profit over 7 months is ₹2.5 lakh. If the company suffered a loss of ₹1 lakh in one of the months, what was the total profit in the remaining months?
A) ₹18 lakh
B) ₹16.5 lakh
C) ₹19.5 lakh
D) ₹20 lakh
Correct Answer: C
Q20. The average of 6 numbers is 50. One number was wrongly added as 70 instead of 40. What is the correct average?
A) 45
B) 48
C) 46.66
D) 49
Correct Answer: D
Q21. A train travels 3 equal distances at speeds of 40 km/h, 60 km/h, and 80 km/h. What is the average speed?
A) 60 km/h
B) 58.18 km/h
C) 56 km/h
D) 61.2 km/h
Correct Answer: B
Q22. The average age of a group of 7 boys is 20 years. When 3 more boys join the group, the average increases by 1 year. What is the average age of the 3 new boys?
A) 24
B) 25
C) 26
D) 27
Correct Answer: C
Q23. The average of 6 consecutive even numbers is 47. What is the second largest number?
A) 48
B) 50
C) 52
D) 46
Correct Answer: B
Q24. A class of 50 students has an average score of 60. If 10 students leave and their average score was 40, what is the average score of the remaining students?
A) 65
B) 62
C) 66.6
D) 68
Correct Answer: A
Q25. The average weight of 40 persons is increased by 1.5 kg when one new person joins. What is the weight of the new person?
A) 90 kg
B) 100 kg
C) 102 kg
D) 98 kg
Correct Answer: B
Q26. The average of a set of numbers is 80. If 4 numbers are removed and their average is 70, what is the new average if the original set had 20 numbers?
A) 82.5
B) 80
C) 83.33
D) 85
Correct Answer: C
Q27. A student scored an average of 60 in five tests. If the average of the first three tests is 58 and that of the last three is 63, what is the score in the third test?
A) 61
B) 62
C) 65
D) 66
Correct Answer: B
Q28. A person covers a certain distance at 30 km/h and returns at 50 km/h. What is his average speed for the whole journey?
A) 38 km/h
B) 36.67 km/h
C) 40 km/h
D) 42 km/h
Correct Answer: B
Q29. The average marks of 60 students is 55. Later it was found that the marks of one student were wrongly entered as 84 instead of 48. What is the correct average?
A) 54.4
B) 54.8
C) 55.6
D) 56.1
Correct Answer: A
Q30. The average monthly income of A, B, and C is ₹18,000. The average monthly income of A and B is ₹20,000, and the average of B and C is ₹17,000. Find the income of B
A) ₹16,000
B) ₹17,000
C) ₹18,000
D) ₹19,000
Correct Answer: D
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Average Problems for SSC Exams – FAQs’
Ans. Average = (Sum of all values) ÷ (Number of values).
Ans. Original total = New average × New count + Removed value; divide by original count.
Ans. It equals the middle term when the number of terms is odd.
Ans. Required score = Target average × Total count − Sum of known scores.
Ans. Learn standard shortcuts, revise common patterns, and practice regularly to build familiarity.-
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