Quantitative Aptitude Questions with Answers for LIC AAO 2019 and Take Quant or Maths Quiz with PDF for Free at Smartkeeda

Directions: Read the following questions carefully and choose the right answer.
Important for :
1
A company hired some trainee employees, the ratio of number of female to male is 2 : 3 and all of them have appeared in an employment test. In the employment test 35% of female and 40% of male had passed. Each female scored 280 marks and each male scored 320 marks. If the number of passed female is 50 less than the number of passed male. Then what is the total number of marks scored by passed male and female together?
» Explain it
A
Let total female are 200x and total male are 300x.
 
Passed female = 35% of 200x = 70x and passed male = 40% of 300x = 120x
 
Difference between passed male and female = 120x – 70x = 50
 
⇒ x = 1
 
Total marks scored by passed candidates = (70 × 1 × 280) + (120 × 1 × 320) = 58000

Hence, option (A) is correct.
2
Arjun is 2 years younger to Bhuvan whose age is 12 years. When 10 years are subtracted from the present age of Shanju and then the result is divided by 6, the present age of his grandson Arjun is obtained. Then what is the ratio of ages of Arjun, Bhuvan and shanju?
» Explain it
A
Bhuvan’s age = 12 years

Arjun’s age = 12 – 2 = 10 years

Let Shanju’s age be ‘x’ years

Then, according to question-

⇒  x – 10  = 10
6

⇒ X – 10 = 60

⇒ X = 70

Required ratio = Arjun: Bhuvan: Shanju

⇒10 : 12 : 70

⇒ 5 : 6 : 35

Hence, option A is correct.' 
3
There are two mixtures of alcohol and water. In 48 L of first mixture 32 L is alcohol while in 32 L of second mixture 20 L is alcohol. If these mixtures are mixed in a large container in such a way that per cent of water in final mixture becomes 36.8%, then find that in what ratio these two mixtures are mixed to form final mixture?
» Explain it
B
Let the ratio in which 2 mixtures are mixed = x : y.

Per cent of water in the final mixture = 36.8%

Per cent of water in first mixture

48 – 32  × 100 =  100  %
48 3

Per cent of water in second mixture

32 –20  × 100 = 37.5%
32

By the rule of allegation-

⇒ Ratio =  Water in second – Water in final
Water in final – Water in first

⇒ x : y =  37.5 – 36.8
36.8 –  100
  3

⇒ x : y =  0.7
10.4
  3

= 2.1 : 10.4 = 21 : 104

Hence, option B is correct.
 
4
A work is started by a man and it is assumed that he will finish the work in 11 days if working alone. Each subsequent day a new man joined the work. In how many days the four times the original work will be completed, if after the 8th day from the starting of the work no new man will be further added? 
» Explain it
C
One day work of a man = 1 unit
 
Total work = 4 × 11 = 44 units
 
If on each subsequent day a new man joined -
 
The work on 2nd day = 2 unit
 
The work on 3rd day = 3 unit
 
So on….
 
Than for the first 8 days the total work = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36 units
 
Remaining work = 44 – 36 = 8 units
 
This remaining 8 unit of work will be completed in 1 more day as 8 men are employed in the work.
 
Hence total time taken = 8 + 1 = 9 days.
 
Therefore, option C is correct.
5
Ajeet purchased 100 books of quantitative aptitude for his book store. He sold 20% of total books at a profit of 10%, 37.5% of remaining at a profit of 15%, 80% of the remaining at a profit of 8% and remaining at a profit of 20%. If he sold all the books at a profit of 16% he would have gained Rs.1505 more, then find the cost price of each book.
» Explain it
C
Let cost price of each book = ‘P’.
 
Books sold at 10% profit = 20% of 100 = 20
 
Books sold at 15% profit = 37.50% of 80 = 30
 
Books sold at 8% profit = 80% of 50 = 40
 
Books sold at 20% profit = 100 – 20 – 30 – 40 = 10
 
Total SP of books = [20 × 1.1P] + [30 × 1.15P] + [40 × 1.08P] + [10 × 1.2P] = 22P + 34.5P + 43.2P + 12P = 111.7P
 
Total SP when all the books are sold at 16% profit = 116% of 100 × P = 116P
 
Difference = 116P – 111.7P = 1505 (Given)
 
⇒ 4.3P = 1505
 
⇒ P = 350

Hence CP of each book = Rs.350

Therefore, option C is correct.

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In Quantitative Aptitude section, this section is quite important because it's decide you can crack this exam or not because there are various students who think that quantitative aptitude is a difficult section and you and other students on a similar score  having total score for example you get a score of marks and there are around students on the same score  but you got more marks in Quantitative Aptitude section as compared to other students because they think that it’s a bit difficult section then you will have better marks in total because this section. In LIC AAO 2019 Quantitative Aptitude Section will decide your entry in Life Insurance Corporation Assistant Administrative Officer so this section is automatically given more importance since so quantitative aptitude section is the most important section which is use as Entry Pass section.

Negative Marking: last thing which you need to keep note of is that LIC AAO exam gives you a negative marking of 0.25 marks for every wrong question so you must ensure that you are confident on the question which you are attempting  so that you don't get most of the  questions wrong and negative marking as a result of the wrong questions.

Syllabus of Quantitative Aptitude for LIC AAO 2019 (Life Insurance Corporation Assistant Administrative Officer):

Data Analysis and Interpretation

Simplification    

Time & Work

Percentage        

Time, Speed & Distance

Profit & Loss      

Problems on Trains

Simple & Compound Interest       

Mensuration – Cylinder, Cone, Sphere

Ratio & Proportion          

Problems on Age

Permutation & Combination

Probability

Average              

Number System

Partnership        

Missing Term  & Wrong Term Series

Mixture & Alligation

Pipes & Cisterns

In LIC AAO 2019 Quantitative Aptitude Section is a 35 marks section with 35 questions each question consist 1 marks and 0.25 for negative as we have already discussed earlier. Generally questions of this section  the level of difficulty was easy to moderate as you felt while solving above in the questions those questions are quite similar to real LIC AAO Exam those questions are new pattern based in speciall designed for LIC AAO 2019.