A pupil’s marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). The number of pupils in the class is:
Correct answer C. 40
Topic / 59 questions
Average MCQs
Average MCQs are aptitude questions on finding the mean of a set of values and using it to solve problems about marks, salaries, ages, prices, runs and speed, with some questions on median. They help NTS, GAT, ISSB, SSC and bank test candidates calculate quickly, and every question shows the correct answer instantly so you can check your method.
- Numbers 104
- Percentage 103
- Age Questions 95
- Profit and Loss 82
- Ratio and Proportion 80
- Time and Work 73
- Alligation or Mixture 73
- Fraction and Decimal 72
- Compound Interest 71
- Simple Interest 69
- Area 64
- Volume and Surface Area 64
- Equations and Inequalities 64
- Time and Distance 64
- Simplification 60
- Permutation and Combination 59
- Average 59
- Basic Algebra 58
- Pipes and Cistern 57
- Partnership 56
- Square Root and Cube Root 51
- Problems on Numbers 47
- Probability 45
- Problems on Trains 44
- Odd Man Out and Series 43
- Surds and Indices 43
- Clock 39
- Races and Games 38
- Height and Distance 37
- True Discount 36
- Stocks and Shares 34
- Boats and Streams 34
- Banker's Discount 32
- Counting 32
- Logarithm 30
- Problems on H.C.F and L.C.M 30
- Calendar 30
- Road Problems 26
- Word Problems 25
- Men and Food 24
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:
Correct answer B. 54.68
A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:
Correct answer D. 285
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The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.
Correct answer C. 48.55 kg
The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is:
Correct answer D. 31 kg
In Arun’s opinion, his weight is greater than 65 kg but less than 72 kg. His brother doest not agree with Arun and he thinks that Arun’s weight is greater than 60 kg but less than 70 kg. His mother’s view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?
Correct answer A. 67 kg.
A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year?
Correct answer A. Rs. 7.98
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
Correct answer B. 40 years
The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
Correct answer B. 4000
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The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?
Correct answer A. 23 years
The average weight of 8 person’s increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
Correct answer C. 85 kg
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
Correct answer D. 19
A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?
Correct answer A. Rs. 4991
In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?
Correct answer A. 6.25
Ahmad bought color pencils with price 3.45 16.75 9.84 and 8.16. Find the average amount spent on a pencil?
Correct answer C. 9.55
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The average weight of the class of 35 students was 45 kg. With the admission of a new student the average weight came down to 44.5 kg. Find the weight of new student?
Correct answer A. 27 kg
In the above question what is the average of un-recovered persons per year?
Correct answer A. (x-y)/5
The average height of a class of 25 students is 4.4 feet. A student of height 5.7 feet is newly enrolled. Find the new average?
Correct answer B. 4.45 feet
What is the average (arithmetic mean) of the positive integers from 101 to 200 inclusive?
Correct answer A. 150.5
Let X be the median and Y the mode of the following set of numbers: 15 60 30 40 60 90. What is the average (arithmetic mean) of X and Y?
Correct answer A. 55
About Average MCQs
This category covers the full range of average problems. You will find a missing number from a known average, adjust averages when members join or leave a hostel, combine averages from different months or matches, and calculate how replacing two people changes the average age of a group. Other questions involve average temperature over several days, average cost after a price change, average speed over a trip with different speeds and finding the median of a list.
Averages are a standard part of quantitative sections and link closely to data interpretation and statistics. Most questions can be solved faster using total sums rather than repeated division. Regular practice helps you recognise patterns, such as how much the total changes when the average rises, and saves valuable time in the exam. Weighted average questions also appear in some tests.
Key facts to remember
- Average (arithmetic mean) equals the sum of values divided by the number of values.
- Total sum equals the average multiplied by the number of values.
- The median is the middle value when data are arranged in order.
- Average speed for a trip equals total distance divided by total time.
- If every value increases by k, the average also increases by k.
Exams that include Average MCQs
Pakistan
- NTS
- GAT
- ISSB
- ECAT
- FPSC
- PPSC
- Banking job tests
India
- SSC CGL
- SSC CHSL
- IBPS PO
- IBPS Clerk
- RRB NTPC
Bangladesh
- BCS
- Bank job exams
- Government job tests
How to prepare for Average MCQs
- Convert averages into totals first, since most average problems become simple subtraction once you work with sums.
- For average speed over equal distances, use 2xy/(x + y) rather than adding the two speeds and halving.
- When a person is replaced, the change in total equals the change in average times the number of people.
- Always sort the data before finding the median, a step that is easy to skip under time pressure.
Frequently asked questions
How do you calculate an average?
Add all the values together and divide by how many values there are. For example, the average of 10, 20 and 30 is 60 divided by 3, which is 20. In exams, it is often quicker to work with the total, which is the average multiplied by the count.
How many Average MCQs are on MCQs360?
MCQs360 has 59 Average MCQs, each showing the correct answer instantly. You can practise them free without registering and use them to sharpen a topic that appears in almost every aptitude test. Start with missing-value problems before replacement questions.
Which exams ask Average MCQs?
Average questions appear in NTS, GAT, ISSB, ECAT and public service commission tests in Pakistan. In India they are standard in SSC CGL, SSC CHSL, IBPS and RRB exams, and in Bangladesh in BCS and bank recruitment tests.
Why is average speed not the simple average of two speeds?
Average speed is total distance divided by total time. When equal distances are covered at different speeds, more time is spent at the slower speed, so the average is lower than the simple mean. For equal distances, use 2xy divided by x plus y.
Last reviewed October 2026