# 4 Methods To Solve Aptitude Questions In IBPS Clerk

Ever wondered what successful students do that you don’t and what’s the secret behind their success in IBPS Clerk exams? The most certain answer is their approach on how to solve aptitude questions. The difference between a winner and others is that others know how to answer aptitude questions whereas the winner knows how to solve the aptitude questions in a smart way in IBPS Clerk.

In this post, we will discuss four ways that will help you solve questions from the aptitude section of IBPS Clerk 2017.

### 1. Traditional method to solve aptitude questions in IBPS Clerk Exam

In the traditional method, we substitute all the given details in conventional formulas and solve the aptitude questions in IBPS Clerk Exam.

### An example of an aptitude question solved using the traditional method:

Question: The Principle (P) amount is 20,000; Time period (t) is 2 year & the Rate of Interest (R) is 14%. Calculate the Compound Interest.

Solution:
Formula:
CI= P {(1+R/100) t – 1}

To solve this aptitude question in IBPS Clerk, we substitute the given values in the formula to get the solution. However, you get the answer, but you end up spending around 2 minutes in the process. In IBPS Clerk, where you are given 30 seconds to solve a question, you just can’t spend 2 minutes on an aptitude question, when the clock is ticking.

### 2. Concept/Fundamental method to solve aptitude questions in IBPS Clerk Exam

This is the second method, where we use the basic concepts and fundamentals of answering the questions without using the conventional formula.

In the above question, we use the concept of effective percentage.

### An example of an aptitude question solved using the fundamental method:

Question: The Principle (P) amount is 20,000; Time period (t) is 2 year & the Rate of Interest (R) is 14%. Calculate the Compound Interest.

Solution:
Formula:
CI = A + B + AB/100

[A & B are two percentages. A is the rate of interest of the first year and B is the rate of interest of the second year.]

In this case, A = 14 and B = 14

Therefore,
14+14+ [(14 x 14)/100]
28+ [196/100]
28+1.96 = 29.96% {Approx- 30%}
30% of 20,000 (P) = 6000

By using the fundamental method, we get the right answer in less than 30 seconds. This is a very useful method to solve some questions in the aptitude section. However, this method cannot be used for all the questions since it takes a long time to solve complex aptitude questions. Hence, use this method only for the simple aptitude questions.

### 3. Substitution method to solve aptitude questions in IBPS Clerk Exam

The substitution method is an effective method in solving various aptitude questions. Especially when you are supposed to find the missing part of a question, this method comes in handy. In substitution method, you are supposed to substitute all the options back in the question.

This method is like reverse engineering where you substitute the answer back in the question one after the other and check which option satisfies the given aptitude questions.

### An example of an aptitude question solved using the substitution method:

The Ages of A & B are in the ratio 7:4 after 5 years the ratio of the ages changes to 11:7. What is the age of A?
A) 12   B) 14   C) 15   D) 28

Solution:
To find the correct answer we substitute the options back in the question.

First Condition:

A: B = 7:4 (original ages)
Therefore,  A’s age has to be a multiple of 7.

Option A - 12: 12 is not a multiple of 7. Therefore, this option doesn't satisfy our condition.
Option B - 14: 14 is a multiple of 7. Therefore, it satisfies our condition.
Option C - 15: 15 is not a multiple of 7. Therefore, this option doesn't satisfy our condition.
Option D – 28: 28 is a multiple of 7. Therefore, it satisfies our condition.

Second Condition:

After 5 years A's age should be a multiple of 11.
A + 5 = Multiple of 11

Lets' take the options which satisfy our first condition.

Option B - 14: After 5 years A’s age would be
14 + 5 = 19
19 is not a multiple of 11. Therefore, this option doesn't satisfy our condition.

Option D – 28: After 5 years A’s age would be
28 + 5 = 33
33 is a multiple of 11. Therefore, 28 is the right answer.

Therefore in substitution method, we substitute the option back in the aptitude questions to find the right answer.

### 4. Elimination method to solve aptitude questions in IBPS Clerk Exam

This is the fourth method to find the answer of an aptitude question. In this method, we don’t find the correct answer but instead, we find the wrong answers.

We know that there are 4 options given, so we either find out the correct answer or find out the 3 wrong ones.

### An example of an aptitude question solved using the elimination method:

Question: This is a simplification question.
?² + 79² = 172² – 88² – 8203. Find ?

A) 86        B) 89        C) 83       D) 93

In this question instead of finding out the squares of the given numbers and substituting them, we follow the elimination method by using the unit digit method.

Solution:
When a number ends with 9, the square ends with 1.
Thus, 79 square ends with 1.

Similarly, for the other options, we know that 172 square would end with the digit 2; 88 square ends with the digit 4 & 8203 ends with the digit 3.

By Simplification,

? + ..1= ..4 – ..4 -  3

The right-hand number would end with 7.

Since the right-hand side ends with 7, the left-hand side also ends with the digit 7.
As we already have a number that ends with 1. So the question mark square ending would be ending with 6 so the unit space of the number will be either 4 or 6.

So now we look at the option answers,
Option A - ends in 6, thus it’s possible.
Option B - ends in 9, eliminated.
Option C - ends in 3, eliminated.
Option D - ends in 3, eliminated.

Therefore, option A is the right option.

Watch our expert faculty explain you in detail 4 methods to solve aptitude questions for IBPS Clerk

In IBPS Clerk, when you are racing against the time, choose the correct method to solve aptitude questions as it helps you to save a lot of time.

Since the official IBPS Clerk notification is out, start practising aptitude questions by selecting the right method wisely.