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Quantitative Aptitude Questions with Explanation for SBI Clerk Prelims 2020 and Get PDF Free for IBPS Clerk Pre, IBPS RRB at Smartkeeda

Directions : Read the following questions carefully and choose the right answer.
1
A can paint ceiling of a room of length 5 cm and breadth 12 cm in 12 hours but B can paint ceiling of a room of length 10 cm and breadth 5 cm in 10 hours. How long A and B together will take to paint ceiling of a room of length 15 cm and breadth 20 cm?
» Explain it
D
We know that,

M1D1  =  M2D2
W1 W2

Or, M1D1W2 = M2D2W1

A × 12 × (10 × 5) = B × 10 × (12 × 5) (Where 10 × 5 and 12 × 5 is the area of the ceiling of the rooms)

A : B = The ratio of efficiency = 1 : 1

Now, A and B together can paint the area of
 
60 cm2 in  12  = 6 hours
2

The time taken by A and B together to paint
15 × 20 cm2 6 × 15 × 20  = 30 hours
60

Hence, option D is correct.
2
A and B started a business by investing in the ratio of 7: 10. C joins after 3 months with the investment one and a half of that of A. At the end of 1 year, out of the total profit, C’s share was Rs. 12600, then what was the total profit (in Rs.)?
» Explain it
B
Let the investment of A = Rs. 7x then the investment of B = Rs. 10x and the investment of C = 1.5 × 7x = Rs. 10.5x
 
The ratio of share = 7x × 12: 10x × 12 : 10.5x × 9 = 28 : 40 : 31.5 
 
C’s share = 31.5x = 12600 
 
x =Rs 400 
 
Total profit = (28x + 40x + 31.5x) = 99.5x = Rs 39800 

Hence, option B is correct.
3
Normally, a bakery shop owner sells a pack of 16 biscuits for Rs. 50. In the peak hour, he sells a pack of same 12 biscuits for the same price. In peak hour, the selling price is how much above than that of normal hour? 
» Explain it
B
In the normal time, the SP of one biscuit =  50
16

In peak hour, The SP of one biscuit = Rs.  50
12

The reqd. % =  ( 50  –  50 )  ×  100  =  ( 4  × 100 × 16 )
12 16 50/16 12 × 16

100  % = 33.33%
3

Hence, option B is correct.
4
Pallavi got marks in physics and chemistry in the ratio of 4: 5 respectively. In chemistry, her marks were 30 more than that of physics and the average of marks received by her in physics, chemistry and maths together was 180. How many marks did she get in maths?
» Explain it
A
Let the marks of physics = 4x then the marks of chemistry = 5x 
 
According to the question, 5x – 4x = x = 30 
 
The sum of the marks of physics, chemistry and maths = 9x + y = 180 × 3 = 540 (y = the marks of maths) 
 
270 + y = 540 
 
y = 540 – 270 = 270 = The marks of maths 
 
Hence, option A is correct.
5
The simple interest received on a sum of money at the end of 10 years is two times of the principal. At the same rate of interest, what would be the ratio of principal and compound interest received at the end of two years?
» Explain it
C
Let the principal = Rs. 100x

Then, according to the question, SI = 2 × 100x = 200x

SI =  P × R × T
100

200x =  100x × R × 10
100

R = 20%

The CI on Rs. 100x for 2 years
 
= 100x  ( 1 +  20 ) 2  – 100x = 44x
100  

The required ratio = 100x : 44x = 25 : 11

Hence, option C is correct.

Quantitative Aptitude for SBI Clerk 2020, IBPS Clerk | Download PDF Free

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Quantitative Aptitude is one most important section when it comes to SBI Clerk Exams, you can’t neglect it. So be sure you are ready to improve you mathematical skills with help of these quizzes, we at Smartkeeda will give you important Quantitative Aptitude Quizzes for SBI Clerk Pre 2020 which through you becomes confident towards you quant section preparation. If you devote more time on this section you get more marks because answers of the quantitative aptitude section is more sure than answers of reasoning section. Here are some important links for individual exercise of different Quantitative Aptitude Chapters.

Quantitative Aptitude for SBI Clerk 2020 consist of given below chapters:
  • Percentage questions for SBI Clerk Pre Click Here
  • Quadratic Equations for SBI Clerk Pre Click Here
  • Problems on Numbers Questions for SBI Clerk Pre Click Here
  • Probability Questions for SBI Clerk Pre Click Here
  • Partnership Questions for SBI Clerk Pre Click Here
  • Ratio & Proportion Questions for SBI Clerk Pre Click Here
  • Mixture & Alligation Questions for SBI Clerk Pre Click Here
  • Boat & Stream Questions for SBI Clerk Pre Click Here
  • Permutation & Combination Questions for SBI Clerk Pre Click Here
  • Problems on Trains Questions for SBI Clerk Pre Click Here
  • Simple Interest Questions for SBI Clerk Pre Click Here

Quantitative Aptitude is a very interesting topic when it comes to SBI Clerk Prelims preparation. If you don’t find the Quantitative Aptitude section interesting, it simply means you have not tried to understand it. At Smartkeeda you will get Quant Questions Quiz on regular basis for SBI Clerk 2020. So that will create interest with fun towards the Quant section. 

Here are some important examples regarding Quantitative Aptitude for SBI Clerk 2020 with PDFs.

Q.1. A can paint ceiling of a room of length 5 cm and breadth 12 cm in 12 hours but B can paint ceiling of a room of length 10 cm and breadth 5 cm in 10 hours. How long A and B together will take to paint ceiling of a room of length 15 cm and breadth 20 cm?

45 hours
20 hours
60 hours
30 hours
None of these

Explanation: 

We know that,

M1D1  =  M2D2
W1 W2

Or, M1D1W2 = M2D2W1

A × 12 × (10 × 5) = B × 10 × (12 × 5) (Where 10 × 5 and 12 × 5 is the area of the ceiling of the rooms)

A : B = The ratio of efficiency = 1 : 1

Now, A and B together can paint the area of
 
60 cm2 in  12  = 6 hours
2

The time taken by A and B together to paint

15 × 20 cm2 6 × 15 × 20  = 30 hours
60

Hence, option D is correct.

Q.2. Normally, a bakery shop owner sells a pack of 16 biscuits for Rs. 50. In the peak hour, he sells a pack of same 12 biscuits for the same price. In peak hour, the selling price is how much above than that of the normal hour?
25% 33.33% 30% 40.67% None of these

Explanation: In the normal time,

the SP of one biscuit =  50
16

In peak hour,

The SP of one biscuit = Rs.  50
12

Reqd. % =  ( 50  –  50 )  ×  100
12 16 50/16

 =  ( 4  × 100 × 16 )
12 × 16

100  % = 33.33%
3

Hence, option B is correct.


All the above questions through, you must be make sure about arithmetic miscellaneous questions which have been seen in last few years. We hope this above Quantitative Aptitude for SBI Clerk 2020 will clear your all doubts regarding bank clerk exams.

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