The numerical ability section of the IBPS RRB mains exam has certain topics that are relatively easy to score. These are the subjects that we have learned in school. One such type of questions is IBPS RRB Average questions. However, when it comes to IBPS RRB, a lot of candidates miss out on getting full marks from these sections. There are two main reasons behind this. Firstly, most of the candidates don’t know the right technique to solve these questions. As a result, they either spend a lot of time answering the questions or they make the wrong answers. The second reason is that they don’t practice enough, thinking that questions are easy to solve. Well, everything needs practice and the right approach. Here, we are going to take a closer look at IBPS RRB average questions and see how you can solve them with ease.

## Analysis of IBPS RRB Average Questions

Before you start your bank exam preparation for any paper or any subject, it is necessary to know about the prevailing trends. Since we are talking about IBPS RRB average questions, let’s see how many questions come on an average, what their level of difficulty is and what are the different variants that commonly come in the exam.

Average Number of Questions on the Subject: If we look at the previous year question papers, we would see about 2-3 questions come from this subject, every year. However, there are instances, when as many as 5 questions are asked.

Level of Difficulty: Questions on Averages are generally easy to solve. If you know the right techniques and had a little bit of practice, you would be able to answer the questions with ease.

Common Types of Questions: There are a lot of variants of questions that come in the exam. Almost all the questions can be put into the following types:

• Straight Averages –You would be asked to find the averages of the given set of numbers. You might have to some of the numbers based on the instructions and then find their average.
• Variable Average – You would be given an average to start with. Then they would introduce a new element in the set and the average would change. You would have to find the value of the new element or the average.

Now that we know what kinds of questions you can expect, let us now see how you can solve some common types of questions.

## Quick Tricks for Solving IBPS RRB Average Questions

Let us look at some of the common types of questions and discover the quickest and accurate ways to solve them. Most of these type of questions have come in the past and they have a good chance of coming in the exam for IBPS RRB 2018 as well.

Question: The average weight of 4 men is increased by 3 kg, if one of the men, weighing 120 kg, is replaced by another. What is the weight of the new man?

Rule to follow: If the average weight/age of n persons is increased by x kg/years, then the total weight/age of the persons increase by n*x years.

Solution: If the average weight is increased by 3 kg, then the sum of the weights is increased by 3*4=12 kg.

This means that the new man should weigh 12 kg more than the person he has replaced. So, weight of the new man = 120+12=132 kg.

Question: If the average score of a cricketer is 27 in the first two innings and 32 in three other innings, what is the average of the cricketer in all 5 innings.

Rule to follow: If we know the average of two different groups, then we use the weighted average formula to find the average of the entire group, as follows Where A is the average of the group and K is the number of elements of the group

Solution: By using the above formula, we have

27*2+32*3/2+3= 54+96/5=150/5=30

Question: A batsman in his 17th innings hits a score of 85 and then his average goes up by 3. What is the score after 16th innings?

Solution: Let the average after 16th innings be x

This is because his total runs after 16 innings would be 16x. Then he scored 85, so we are going to add that. On the other hand, his new average is (x+3). So, his total runs after 17th innings is 17(x+3)

then 16x+85= 17(x+3)

=> 16x+85=17x+51

=>x= 85-51=34

## Practice Questions

Question 1: 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?

Options:

A. 6.25
B. 6.5
C. 6.75
D. 7

Question 2: 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?

A. Rs. 4991
B. Rs. 5991
C. Rs. 6001
D. Rs. 6991

Question 3:

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?

Options:

A. 76 kg
B. 76.5 kg
C. 85 kg